How to write Portuguese messages for making a simple complaint

Introduction

Writing a simple complaint in Brazilian Portuguese is a practical skill for travelers, students, and anyone interacting with services or businesses. This article explains useful vocabulary, polite vs direct tones, common sentence patterns, and sample messages you can use in emails, chat, and short notes. Examples are in Brazilian Portuguese and tailored for beginner to intermediate learners.

Why learning to write a complaint matters

Complaints are part of everyday communication: asking for a refund, reporting a damaged product, correcting a billing error, or fixing a reservation. Knowing how to write clearly and politely increases the chance of a quick, helpful response. In Brazilian Portuguese, small differences in tone and formality can change how your message is received.

Key differences: formal vs informal tone

Choose formal language for businesses, hotels, banks, and official emails. Use informal language for messages to friends, small local shops you know, or WhatsApp chats with a familiar service provider. Formal messages often include greetings, a clear description, and a closing with contact details. Informal messages can be shorter and more direct.

Essential vocabulary for complaints (Brazilian Portuguese)

Reclamação — complaint

Problema — problem

Defeito — defect

Troca — exchange

Reembolso — refund

Solicitar — to request

Informar — to inform

Resolver — to resolve

Prazo — deadline / time frame

Atendimento — customer service

Polite phrases to start a complaint

Bom dia,

Boa tarde,

Prezados,

Olá,

Eu gostaria de registrar uma reclamação sobre…

Venho por meio desta informar que…

Structure and sentence patterns for a simple complaint

Follow a clear pattern: greeting, brief context, describe the problem, request what you want, provide details, suggest a deadline, closing with contact information.

Pattern: formal email or message

Greeting + brief context

Description of the problem

Request or desired solution

Supporting details (order number, date, photos)

Polite closing

Pattern: informal chat message

Short greeting or none

State the problem briefly

Ask for help or next steps

Provide a contact time if needed

Grammar and tone tips

Use the present perfect or present when the problem is current: Eu recebi, O produto chegou, O serviço não foi concluído.

State facts first, avoid emotional language. For example, say O produto está com defeito rather than Estou muito irritado.

Polite verbs and structures: Poderiam, Seria possível, Gostaria de, Solicito.

Use formal pronouns sparingly. Você is common in Brazil for customer service; but Prezado(a) + surname is very formal.

Spelling, accents, and punctuation to watch

Pay attention to accents: problema (no accent), cartão (accent on o), reembolso (no accent), serviço (accent on e). Incorrect accents can change pronunciation and sometimes meaning.

Use commas and periods to keep sentences short and clear. Avoid long run-on sentences that confuse the reader.

Include relevant numbers like pedido 12345 or nota fiscal 67890. Use digits for clarity.

Useful phrase bank with translations and notes

Eu comprei este produto no dia 05/04/2026 e ele chegou com defeito.

Note: give the purchase date so the company can check the order.

O dispositivo não liga mais depois de duas horas de uso.

Note: describe what you did and when the problem started.

Gostaria de solicitar a troca do produto ou o reembolso, por favor.

Note: state your preferred solution: exchange or refund.

Poderiam me informar o prazo para a resolução?

Note: ask for a clear deadline to avoid long waits.

Anexo fotos do item danificado para comprovar o problema.

Note: mention attachments such as photos; many businesses ask for proof.

Meu número de pedido é 98765 e o CPF do titular é 000.000.000-00.

Note: include order number and identification when relevant.

Sample messages: formal email, WhatsApp, and short note

Formal email example

Assunto: Reclamação — pedido 98765

Prezados,

Eu recebi o pedido 98765 em 02/04/2026 e o produto chegou com defeito: a tela está riscada e não funciona o touch.

Gostaria de solicitar a troca do produto ou, caso não seja possível, o reembolso do valor pago.

Anexo fotos do item danificado e a nota fiscal.

Poderiam, por favor, informar o prazo para a troca?

Agradeço desde já pela atenção.

Atenciosamente,

Mariana Silva
Telefone: (11) 91234-5678

Informal WhatsApp example

Olá, bom dia. Meu pedido 98765 chegou com defeito. A tela está com risco e não funciona o touch. Dá para trocar ou devolver?

Posso enviar foto se precisar. Obrigado(a), João.

Short note for in-person complaint

Bom dia,

Comprei esta blusa ontem e percebi que tem um rasgo na costura. Número do pedido 12345. Gostaria de trocar, por favor.

Beginner writing tips and shortcuts

Keep sentences short and direct. Short messages are easier to understand and faster to respond to.

Use templates. Save a couple of complaint templates you can quickly edit with details like order number and dates.

When unsure about a word, choose a simple verb like pedir (to ask), solicitar (to request), or informar (to inform).

Always include a clear call to action: Quero reembolso, Solicito troca, Peço agendamento de conserto.

How to ask for confirmation politely

Podem confirmar o recebimento desta mensagem?

Por favor, confirmem quando tiverem uma solução.

Ficarei no aguardo do retorno até dia 10/04/2026.

Common beginner mistakes and how to fix them

Using emotional or vague language: Avoid Estou muito chateado(a); instead write O produto veio danificado and specify the damage.

Omitting important details: Always include order number, date, and photos if possible. Missing these delays the response.

Overly formal or outdated words: Avoid terms like Vossa Senhoria in customer service messages. Use Prezados or Olá.

Incorrect accent use: For example write servico instead of serviço. If unsure, use simple words without accents but be careful, as some words change meaning without accents.

Practice exercises for learners

Exercise 1: Write a short email asking for a refund for a train ticket you could not use. Include date, ticket number, and preferred solution.

Exercise 2: Draft a WhatsApp message to a restaurant that sent the wrong order. Keep it under three sentences and polite.

Exercise 3: Convert a spoken complaint into a written one. Imagine you told a clerk in person; write the same information in an email with order details and photos attached.

Checklists before sending your complaint

Include a greeting and a closing.

State the core problem in one sentence.

Include order number, date, and relevant personal data when necessary.

Attach photos or documents if they help prove the issue.

Ask for a specific action and, if possible, a deadline.

Realistic examples you can copy and adapt

Example for a damaged suitcase

Assunto: Reclamação — mala danificada

Olá, comprei uma mala modelo X em 15/03/2026 e, ao retirar da embalagem, percebi um rasgo na lateral. Número do pedido 43210. Solicito a troca imediata ou o reembolso. Anexo fotos.

Example for a late service appointment

Assunto: Agendamento não cumprido — serviço técnico

Prezados, havia um agendamento para 01/04/2026 entre 14h e 16h e o técnico não compareceu nem entrou em contato. Solicito reagendamento com prioridade ou cancelamento e reembolso do valor pago.

Conclusion

Writing a simple complaint in Brazilian Portuguese is about clarity, relevant details, and appropriate tone. Use short, factual sentences, include order numbers and photos, and state the solution you want. Keep formal language for businesses and informal for familiar contacts. Practice with the templates and examples above to build confidence for real situations.