Scams these days get pretty elaborate.
One time my Dad's Taco Bell account got hacked. They ordered 700 something dollars worth of food, of course it got denied by the card company. They then called my Dad and pretended to be the card company so they could get his card number from him as you can't see the full card number on the Taco Bell app.
Thankfully I was nearby and yelled "HANG UP NOW, IT'S BULL****!!! Call the number on your card!" He looked at me like I was crazy, but thankfully he listened to me.