Cancel your Oi subscription by mail
For Oi the route is a written letter: cancellation requests are taken by post, and certified mail shows when yours arrived. Letters to Oi go to Rio de Janeiro, Brazil.
Let Postbye cancel Oi 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.
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- 3 Oi 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 by mail
Find your account details
Before writing, collect the account number, the phone number or service address being cancelled and the name on the account. Oi can only act on a request it can match to an account.
Prepare the letter
Because Oi is dealt with in Brazilian Portuguese, the letter is written in Brazilian Portuguese (template pt-br). Subject: “Assunto: Solicitação de cancelamento – [your name]”. It requests an end to the subscription and to every further charge, plus written confirmation.
Post it with proof of delivery
Mail the letter by certified mail to the Rio de Janeiro address in the next section, and keep the tracking number.
Keep the proof of delivery
File the receipt with the letter. A Oi charge dated after delivery is the one to dispute, and these two documents are what you quote.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Oi cancellation letter goes
Written requests to Oi go to Rua do Lavradio 71, 20230070 Rio de Janeiro, Brazil.
The envelope is going to Rio de Janeiro, Brazil, so the postcode 20230070 must be on the front.
The letter is addressed “A quem possa interessar,” and its details block uses the labels Titular da conta, Endereço de cobrança cadastrado and E-mail cadastrado.
Prefer to write it yourself? Use our letter template
Before you cancel Oi, check these
- 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.
- Name the exact line or service address. Accounts with several lines can leave one of them running.
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 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.
Putting the request in writing means there is a date on file for when you asked, which matters if a charge appears afterwards.
Oi cancellation at a glance
- How Oi accepts cancellations
- By mailed letter
- Mailing address on file
- Oi Rua do Lavradio 71 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
- July 29, 2026
- Data last checked
