Caller ID can show your bank's real number even when the caller is not the bank. Fake 'fraud investigators' have told people, including businesses, to install remote-access apps and move money to a 'safe' account. Hang up and call the number on your card.
First your inbox is flooded with hundreds of subscription emails. Then a chat, often in Microsoft Teams, arrives from 'IT Support' offering to fix it if you let them control your computer. Real IT will not cold-message you that way.
A fake security pop-up claims your computer or bank accounts are in danger, then scammers take remote control and tell you to buy gold bars 'to protect' your savings. A courier later collects the gold.