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Consumer Matters, Clearly helps consumers understand purchases, contracts, charges, and complaints through official sources, checklists, and safe next steps.

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Mesa de madeira com notebook, caixa de compra, celular, fritadeira elétrica e três folhas identificadas como garantia legal, contratual e estendida.
Purchases & Warranties22/09/20266 min read

Statutory, contractual and extended warranties in Brazil: timing and liability

Compare timelines, documents and responsibility for product defects, including latent faults discovered after the manufacturer's warranty.

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Consumidora compara shampoo com etiqueta de R$ 12,90 na prateleira e cobrança de R$ 17,90 no caixa, enquanto registra o preço com o celular.
Purchases & Warranties14/09/20265 min read

Shelf price lower than checkout price: which price applies and what evidence to keep

If the same product shows a lower shelf price than the checkout price, the lower amount applies. Learn how to verify the offer, preserve evidence, and respond if the store refuses.

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Mesa com notebook exibindo compra online, caixa entregue, celular, comprovantes, pasta de provas, lupa e documento de nota fiscal marcado como não enviado.
Purchases & Warranties14/09/20265 min read

Online store did not send an invoice: what to request and what evidence to keep

Learn why the fiscal document must be made available for an online purchase, where to look for the NF-e, and which records to preserve when contacting the seller.

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Atendente apresenta smartphone usado em loja, com comprovante e símbolo de proteção, enquanto uma cena secundária mostra venda entre particulares e inspeção de defeitos.
Purchases & Warranties14/09/20266 min read

Do used products bought from a store have a warranty? Deadlines, disclosed defects and private sales

Used goods sold by a professional supplier remain covered by Brazil's statutory warranty. Learn the deadlines, disclosed defects, hidden defects and what changes in private sales.

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Pessoa fazendo compra online no celular ao lado de um cartão virtual azul com escudo de segurança, um cartão físico sobre a mesa e um alerta visual de phishing ao fundo.
Purchases & Warranties13/09/20269 min read

Is a virtual card safer than a physical one? What it protects — and what scams still bypass

A virtual card can reduce data exposure in online purchases, especially with a dynamic CVV and spending controls, but it does not stop phishing, fake bank support, or account compr...

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Mão segura smartphone com duas ofertas de crédito lado a lado, enquanto lupas destacam CET e custo total em uma mesa com calculadora e elementos financeiros.
Charges, Credit & Debt12/09/20266 min read

Pre-approved credit in an app: how to compare CET and avoid the lower-payment trap

Learn how to compare pre-approved credit by CET, term and total cost, and why a lower monthly installment can still mean paying more overall.

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Torre de transmissão ao pôr do sol ligada visualmente a fontes hidrelétrica, eólica, solar e industrial, diante de uma residência e um pequeno comércio com dois consumidores.
Services & Customer Support12/09/20268 min read

Brazil’s free electricity market for low-voltage consumers: who can choose a supplier in 2027/2028 and what remains regulated

Decree 13,097/2026 opens Brazil’s free electricity market to low-voltage consumers in two stages: commercial and industrial customers from November 25, 2027, and all other customer...

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Sala com TV exibindo anúncio em serviço de streaming, celular com tela de assinatura e mesa com documentos, fatura, lupa e balança da justiça.
Contracts and Subscriptions11/09/20267 min read

Prime Video ads: what Senacon is reviewing and what evidence subscribers should keep

Senacon opened a preliminary review of Prime Video ads and changes affecting existing contracts. See what remains under review and which records are worth preserving.

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Funcionária de companhia aérea faz gesto de parada diante de passageiro no portão de embarque, com avisos de suspensão de 6 e 12 meses ao lado.
Services & Customer Support11/09/20267 min read

Disruptive passenger in Brazil: when an airline can suspend domestic flight access for 6 or 12 months from September 14

ANAC Resolution 800/2026 creates 6- or 12-month suspensions for extremely serious misconduct. See the cases, defense rights, refunds, and limits.

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Mulher observa o celular ao lado de uma representação de chamada bloqueada e ícones de ligações repetidas.
Services & Customer Support11/09/20265 min read

Automatic blocking of abusive calls: how it works, how to opt out and how to challenge a block

Learn when a carrier may enable network-level anti-spam protection, how to opt out and how to request review of an improper block.

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Mão segura celular com ingresso digital diante de um show, cercado por painéis que representam transferência, arrependimento e posição em fila virtual.
Purchases & Warranties11/09/20269 min read

Event tickets in Brazil: what Decree 13,108 changes for transfers, cooling-off rights and virtual queues

See which rules under Decree 13,108 are already in force and which take effect on September 21 for online ticket purchases, transfers, cooling-off rights and virtual queues.

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Caixa de encomenda internacional ao lado de um notebook com checkout que destaca Imposto de Importação em 0% e ICMS ainda cobrado.
Purchases & Warranties10/09/20265 min read

International purchases up to US$ 50: what became tax-free under Remessa Conforme and why ICMS remains at checkout

Since May 12, 2026, purchases by individuals on Remessa Conforme-certified websites can have 0% Import Duty up to US$ 50, while state ICMS still applies. See how the threshold and ...

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Purchases & Warranties

Deliveries, defects, exchanges, guarantees, offers and in-person or digital purchases.

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Pessoa conferindo uma compra online recém-entregue ao lado de uma caixa de presente, em referência ao direito de arrependimento.
Purchases & Warranties07/08/20264 min read

Father's Day online shopping: when does the 7-day right of withdrawal period begin?

When purchasing online for Father's Day, the 7-day period for regret is due to the signing of the contract or receipt, as applicable.

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Linha do tempo de uma compra online mostrando pedido, prazo prometido, atraso, reclamação e solicitação de reembolso
Purchases & Warranties06/08/202612 min read

Father's Day gift delayed: how to charge for delivery, cancel and request refund with proof

If the gift did not arrive on the promised date, gather the evidence and choose: demand delivery, accept an equivalent or cancel with a refund.

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Embalagem genérica de suplemento com destaque para os campos de lote e validade, ao lado de um símbolo de alerta sanitário.
Purchases & Warranties03/08/20268 min read

Anvisa orders seizure of counterfeit batch of Omegafor Plus: how to check before using

The measure only affects batch B25 2501951, validity 08/27. See where to check the data, what to photograph and which receipts to keep.

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Pessoa aponta uma rachadura em um pequeno eletrodoméstico preto e metálico, ao lado de caixa de papelão, celular e papéis sobre uma mesa.
Purchases & Warranties27/09/20266 min read

Defective product in Brazil: when does the supplier’s 30-day repair period begin?

Learn when the CDC’s 30-day repair period starts, what proof to keep, when an immediate remedy applies and how it differs from the 30- or 90-day complaint periods.

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Contracts and Subscriptions

Reading of contracts, cancellations, renewals, loyalty and possible abusive clauses.

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Mesa escolar com contrato de rematrícula 2027, calendário, mochila, livros, materiais escolares e checklist de conferência.
Contracts and Subscriptions03/09/20265 min read

2027 school re-enrollment in Brazil: can a private school raise tuition by any amount?

Brazilian law sets no fixed percentage cap on school tuition increases, but the 2027 adjustment is not unrestricted: it must be tied to demonstrable costs and presented transparent...

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Pessoa compara no celular uma fatura de internet mais cara com contrato de reajuste, calendário de 12 meses e checklist de provas.
Contracts and Subscriptions02/09/20267 min read

Cellphone or internet plan went up before 12 months? When the increase can be challenged

Understand Anatel's 12-month rule, distinguish a price adjustment from an expiring discount or offer change, and see what evidence to gather for a billing dispute.

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Mãos seguram celular na tela de confirmação de cancelamento ao lado de roteador Wi‑Fi e calendário destacando dois dias úteis.
Contracts and Subscriptions01/09/20267 min read

Canceled your internet service in the app? When the provider gets up to 2 business days—and when cancellation is immediate

Digital self-service cancellation can take up to 2 business days; with an attendant, it must take effect immediately. Learn what to save and how to dispute later charges.

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Pessoa segura celular com orientações sobre renovação automática ao lado de notebook com cobrança de assinatura no cartão e cartão de crédito sobre a mesa
Contracts and Subscriptions28/08/202610 min read

Subscription renewed automatically and charged your card: does canceling entitle you to a refund?

Canceling a renewed subscription may stop future charges, but it does not guarantee a refund for the cycle already paid. Understand when a refund may be due and what is still only ...

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Charges, Credit & Debt

Undue charges, registrations, responsible credit, negotiation and over-indebtedness.

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Capa editorial com balança da Justiça, calculadora, fatura com valor pago em excesso, blocos de cobrado, pago e devolução em dobro e livro do Código de Defesa do Consumidor.
Charges, Credit & Debt21/08/202611 min read

Does an improper charge result in a double refund? What changes between amount charged, amount paid and justifiable mistake

The double return of the CDC depends, as a rule, on undue payment. Understand how to calculate the excess paid, when cancellation or simple refund is appropriate and how justifiabl...

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Pessoa segura um celular com a fatura aberta e um cartão de crédito sobre mesa com caderno de passos, comprovantes e protocolos de atendimento.
Charges, Credit & Debt19/08/20268 min read

Purchase not recognized on the card: what to do right away, what to keep and how to follow up on the dispute

Know how to differentiate a strange name on the invoice from a truly unauthorized purchase, act quickly, save evidence and follow up on the dispute without making a payment error.

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Mão segura smartphone com duas ofertas de crédito lado a lado, enquanto lupas destacam CET e custo total em uma mesa com calculadora e elementos financeiros.
Charges, Credit & Debt12/09/20266 min read

Pre-approved credit in an app: how to compare CET and avoid the lower-payment trap

Learn how to compare pre-approved credit by CET, term and total cost, and why a lower monthly installment can still mean paying more overall.

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Pessoa segura comprovante de pagamento e celular com consulta do SPC diante de notebook com Serasa, calendário de cinco dias úteis e anotações sobre a baixa.
Charges, Credit & Debt16/08/20266 min read

I paid the debt and my name remains on Serasa or SPC: when do the 5 working days start and what to do

The period of five working days begins after full and effective payment. See how to count, identify the active record and charge the write-off correctly.

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Services & Customer Support

Problems with telecommunications, banks, transport and other services, respecting sectoral rules.

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Mãos seguram smartphone com chamada de telemarketing 0303 enquanto o botão de recusar é acionado, ao lado de um símbolo de bloqueio telefônico.
Services & Customer Support10/09/20265 min read

Is 0303 no longer mandatory? How to identify and block unwanted telemarketing in 2026

The 0303 prefix is now optional. Learn how to identify calls, use Não Me Perturbe, block numbers and escalate a complaint to Anatel.

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Mãe e filha menor sentadas lado a lado em poltronas de avião junto à janela, sorrindo uma para a outra.
Services & Customer Support02/09/20266 min read

Can a child under 16 sit next to their responsible adult without paying a seat fee? What ANAC Resolution 807/2026 says

ANAC Resolution 807/2026 guarantees a contiguous seat with a responsible adult or family member and bars an extra fee for assigning the minor's seat, with exceptions.

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Mão segurando smartphone que exibe chamada de uma operadora oferecendo plano, com opção de bloquear na tela.
Services & Customer Support01/09/20264 min read

Your telecom provider keeps calling with plan offers: how to block the calls and when to complain

Learn how to record your opt-out from provider telemarketing, use Não Me Perturbe, keep evidence, and escalate a complaint if the offers continue.

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Pessoa em terminal de aeroporto segura bilhete aéreo e celular com comparação entre os prazos de 24 horas da ANAC e 7 dias do CDC.
Services & Customer Support30/08/20268 min read

Airline ticket bought online: do ANAC's 24 hours or the CDC's 7 days apply in 2026?

In 2026, ANAC guarantees penalty-free cancellation within 24 hours when the flight is at least 7 days away. The CDC provides 7 days, but the conflict is still before the STJ.

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Understand before you accept, pay, or complain

Consumer Matters, Clearly publishes educational information about consumer relations in Brazil. Our content is based on legislation, official agencies, and regulators, distinguishes general rules from exceptions, and shows how to organize documents, make requests, and find service channels. The blog does not analyze individual cases or replace legal advice. Articles involving deadlines, contracts, credit, liability, or court measures receive qualified human review and are updated when relevant sources change.

Responsible: Núcleo de Consumo e Direitos