Unfiltered Story #92627

I’m working at a register in a grocery store. Near the start of my shift, a scraggly-looking old man comes through. I scan his stuff, everything’s going fine, but then we get to the payment.
Me: That’ll be (amount).
Customer: I wanna get cash back.
Me: Okay, just put your card in the pad, and you should get a prompt.
(He does that.)
Customer: It just says “amount OK.”
(I realize he might be trying to do this with a credit card; very few credit cards allow cash back.)
Me: Sir, is that a credit card or a debit card?
(He stares at me blankly for a moment, and then points at the card.)
Customer: It’s in there.
Me: I’m sorry?
Customer: It’s in there.
Me: Yes, I see the card in the pad, sir. I’m just asking if it’s a credit card or a debit card.
(He stares at me again.)
Customer: It’s in there.
(I realize I’m probably not going to get anywhere with this line of questioning, so I decide to make it clear for him.)
Me: Sir, if that’s a credit card, you can’t get cash back with it.
Customer: I wanna get cash back. It’s in there.
(We go back and forth for about a minute. Another customer has queued up behind him. While this is going on, he shoot me an apologetic look.)
Me: Sir, you cannot get cash back with this card. Please just press ‘yes’ when it says amount okay.
(He pushes ‘no’ and then enters $20 into the prompt, presumably to get $20 cash back. He just pays $20 instead.)
Me: Sir, you’ve just payed $20, you still owe me (amount).
Customer: Where’s my cash back?
Me: You. CANNOT. Get. Cash. Back. With. A. Credit. Card.
Customer: It’s in there.
(I eventually manage to cajole him into paying the rest of his bill. As he’s leaving, he says this:)
Customer: This is why I hate these dumb computers, takes forever to do anything.
(I just want to make it clear, this was not a foreign guy. We were both speaking perfect English. I have no clue why he wasn’t understanding me.)