🏦Call your bank NOWUse the number on the back of your card or in your official app (never one you were sent by text or email). Tell them: "I've been a victim of fraud, I want to block this transaction."
🔒Did you share a password or code?Change it right now on the real service (type the address yourself — never use the link you were sent).
After you've called, in this order:
Take screenshots of the conversation, message or listing, before it disappears.
Report it to the police, in person or online.
Notify the platform (WhatsApp, Wallapop, your bank, etc.) about the account or number that scammed you.
Once you're calmer, read the full step-by-step guide (in Spanish) so you don't miss anything.