Banco Itau of Punta del Este Scam

Hello, last year after moving, I sold used items through WhatsApp sales chats and Mercado Libre. A guy bought some objects from me and made an immediate transfer using an Itau debit card (which I used to avoid being scammed). A month and a half later, when I went to use the card, I found it was blocked. I called the bank, went there, and also to the police station. They told me that the guy said he had made an erroneous deposit, so they blocked my card without consulting me and forced me to return the money to the scammer, who also still had the items he bought from me. At the police station, when I gave them the guy's name, they said there was no ID for that name, meaning Itau was a mediator in a scam against me! On top of that, they gave a bad report about me to the central bank! 😡😡😡😡