Itaú Unibanco Fraud: How to Report It and Stop the Money
If money left your Itaú Unibanco account without your permission, or you paid a scammer, contact Itaú Unibanco straight away and ask it to block the payment and your card. The first minutes matter most.
Do this first
- Call Itaú Unibanco’s official line below, or use help inside the official Itaú Unibanco app. Never use a number from a text, a caller or a search result.
- Give them the transaction details (amount, time, and the account or number you paid) and ask them to block your card and stop or recall the payment.
- Change your online banking password and PIN if anyone may know them. Itaú Unibanco will never ask for your PIN, password or a one-time code.
- Report it to the police too: see who handles cybercrime in Brazil, and keep screenshots of every message and payment.
Official Itaú Unibanco fraud contacts
Itaú Unibanco
Bank- Scam or theft, say 'roubo' for priority (capitals and metro areas):4004 4828
- Scam or theft (other areas):0800 970 4828
- From abroad:55 11 4004 4828
- Other Itaú credit cards (capitals and metro areas):3003 3030(24/7)
- Other Itaú credit cards (other areas):0800 720 3030(24/7)
- Credit cards, hearing or speech impaired:0800 722 1722(24/7)
- iti app (capitals):3003 6484(24/7)
- iti app (other areas):0800 2000 484(24/7)
App or online: iti app: Profile › Help › Chat. You can also block accounts and cards through the Celular Seguro app.
Report phishing: [email protected]
Know this about Brazil
- A refund is not guaranteed: the Pix MED process only lets your bank try to recover the money.
- Consumer-protection agents never call to ask for your personal data.
If Itaú Unibanco won’t help
Your bank's Ouvidoria (internal ombudsman)
Every supervised institution must have an Ouvidoria that can mediate when the normal customer channel has not solved your problem; the Central Bank links a list of Ouvidoria contacts.
Use it after the bank's normal customer channel.
Official websiteBanco Central do Brasil: register a complaint
Complaint against a bank, payment institution or other firm supervised by the Central Bank.
You need a gov.br account at silver or gold level with two-step verification. The Central Bank does not resolve individual cases; the institution has up to 10 business days to respond.
Official websiteConsumidor.gov.br
Government platform for complaining directly to participating companies, including banks.
Log in with your gov.br account.
Official websiteYour rights as a Itaú Unibanco customer in Brazil
- Pix MED (Mecanismo Especial de Devolução). If you were tricked into a Pix payment, contest it through your own bank's app within 80 days. A refund depends on money still being in the accounts used by the fraudster. Source
Report it to the police too
Cybercrime agencies in Brazil lists who to report to, and our step-by-step guide covers the rest: How to Report a Scam in Brazil (and Recover Your Money).
Common questions about Itaú Unibanco fraud
- What is the Itaú Unibanco fraud helpline number?
- Itaú Unibanco lists these numbers on its own website: Scam or theft, say 'roubo' for priority (capitals and metro areas): 4004 4828; Scam or theft (other areas): 0800 970 4828; From abroad: 55 11 4004 4828; Other Itaú credit cards (capitals and metro areas): 3003 3030 (24/7); Other Itaú credit cards (other areas): 0800 720 3030 (24/7); Credit cards, hearing or speech impaired: 0800 722 1722 (24/7); iti app (capitals): 3003 6484 (24/7); iti app (other areas): 0800 2000 484 (24/7). Always dial the number printed on your card or shown in the official app if you are unsure.
- How do I report fraud to Itaú Unibanco?
- Call Itaú Unibanco's official line, or report it in the app or online: iti app: Profile › Help › Chat. You can also block accounts and cards through the Celular Seguro app.. Tell them the amount, the time and the account the money went to, and ask them to block your card or the payment.
- What if Itaú Unibanco will not help or refund me?
- In Brazil you can complain to Your bank's Ouvidoria (internal ombudsman), Banco Central do Brasil: register a complaint, Consumidor.gov.br. Details of what each one handles are on this page.
Other providers in Brazil
BradescoBanco do BrasilCaixa Econômica FederalSantander BrasilPix (instant payment) and the MED refund mechanism
These contacts were read on Itaú Unibanco’s own website on 3 October 2026. If a number has changed, use the one in the official app and tell us. Ministry of Cyber Affairs is not Itaú Unibanco and cannot recover money. All Brazil providers are in Bank Fraud Help: Brazil.