Cancel your C6 Bank subscription by mail
C6 Bank deals with cancellations through the post, so the request goes in a letter and the certified-mail receipt is your proof of when. Our database has C6 Bank's mailing address in São Paulo, Brazil.
Let Postbye cancel C6 Bank for you
We write your letter, mail it by certified mail the next business day, and confirm when the cancellation went through. You keep the signed proof.
Money-back guarantee within 10 business days.
Postbye is not affiliated with C6 Bank.
- 4.8 from 2,931 reviews
- 3 C6 Bank cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel C6 Bank by mail
Start with your account details
Before writing, collect the account email, the last four digits of the linked bank account or card and the membership tier. C6 Bank can only act on a request it can match to an account.
Set out the request
Postbye drafts the request in Brazilian Portuguese, the language of Brazil, with “Assunto: Solicitação de cancelamento – [your name]” as the subject line. It asks C6 Bank to close the subscription, stop billing and confirm in writing.
Mail it with tracking
Send it certified to São Paulo, Brazil, copying the address from the next section letter for letter, and keep the receipt slip.
Keep the proof of delivery
Keep the tracking record with your copy of the letter. If C6 Bank bills you after the date it received the request, you have the dates to point to.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your C6 Bank cancellation letter goes
C6 Bank takes its post at Avenida Nove de Julho 3186, 01406000 São Paulo, Brazil, which is where a cancellation letter belongs.
The postcode 01406000 belongs to São Paulo, Brazil, so this is where the envelope is delivered.
Your details go in a block headed by Titular da conta, Endereço de cobrança cadastrado and E-mail cadastrado, and the opening line is “A quem possa interessar,”.
Prefer to write it yourself? Use our letter template
Every address we hold for C6 Bank, with the envelope wording
Before you cancel C6 Bank, check these
- Ask for the direct debit or card authorisation to be ended, not only the membership.
- Investment and credit-builder products can have their own steps for closing the underlying account.
- Check your bank statement after the cancellation date for any further charge.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel C6 Bank for you
We write your letter, mail it by certified mail the next business day, and confirm when the cancellation went through. You keep the signed proof.
Cancelling a finance or credit subscription
Finance and credit apps bill a membership fee through a linked account, so the request has to end the membership and the authorisation to take payments.
A mailed letter is slower than a phone call but it is the version that proves what you asked for and when.
C6 Bank cancellation at a glance
- How C6 Bank accepts cancellations
- By mailed letter
- Mailing address on file
- C6 Bank Avenida Nove de Julho 3186 01406000 São Paulo Brazil
- Country
- Brazil
- Letter language
- Brazilian Portuguese (template pt-br)
- Category (from the company name)
- Finance & credit
- Added to the database
- July 29, 2026
- Data last checked
