Cancel your Oi Internet subscription by mail
Oi Internet deals with cancellations through the post, so the request goes in a letter and the certified-mail receipt is your proof of when. Letters to Oi Internet go to Rio de Janeiro, Brazil.
Let Postbye cancel Oi Internet 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 Oi Internet.
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- 2 Oi Internet cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Oi Internet by mail
Gather your account details
Before writing, collect the account number, the phone number or service address being cancelled and the name on the account. Oi Internet can only act on a request it can match to an account.
Draft 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 Oi Internet to close the subscription, stop billing and confirm in writing.
Mail it with tracking
Take the letter to the post office and ask for certified delivery to 20230070 Rio de Janeiro. Keep the tracking number it gives you.
Keep proof the letter arrived
Once the letter is delivered, the date on the receipt is the date Oi Internet was told. Compare it with your statements over the next billing cycle.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Oi Internet cancellation letter goes
Oi Internet takes its post at Rua do Lavradio 71, Andar 2, 20230070 Rio de Janeiro, Brazil, which is where a cancellation letter belongs.
Postal code 20230070 places the address in RJ, Brazil.
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 Oi Internet, with the envelope wording
Before you cancel Oi Internet, check these
- Ask for a final bill in writing and return any rented equipment by tracked mail.
- Check for an early-termination fee or a remaining equipment balance before the cancellation date.
- If you are moving to another provider, keep the line active until the new service works, then cancel.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Oi Internet 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 phone or internet plan
Phone and internet providers tie cancellation to contracts, equipment balances and notice periods, so the request should name the exact line or service and ask for a final bill in writing.
A phone call leaves nothing behind; a letter leaves a copy, a date and a delivery receipt.
Oi Internet cancellation at a glance
- How Oi Internet accepts cancellations
- By mailed letter
- Mailing address on file
- Oi Internet Rua do Lavradio 71 Andar 2 20230070 Rio de Janeiro Brazil
- Country
- Brazil
- Letter language
- Brazilian Portuguese (template pt-br)
- Category (from the company name)
- Phone & internet
- Added to the database
- September 21, 2026
- Data last checked
