Got a call yesterday (on our cell phone which we use only in emergencies and noone should have the number!) mentioned credit card company, hung up immediately as they were using up our minutes! Ridiculous. Can't believe they asked for someones credit card number, scary!
They sure are busy! Same as others...scam, do not give them any information. Just hang up on them before they can hang up on you. It might not hurt to belittle them with profanity as you do.