I’ve witnessed cashiers yelling at customers in NYC before, “what, you been in line for ten minutes already whaddya mean you don’t know what you want? Get out of the line, move to the back... NEXT!”
I had a Mickey D’s manager yell at me one time.
I had placed my order at the drive through and was waiting at the window for it to come.
At that time, it was common practice for the staff to ask you to move ahead and they would bring your order out to you when it was ready. And often they would get it wrong.
So I always refused to pull ahead; I stayed at the window. One day the kid just looked at me when I said “No”, and she got the manager. He told me to move up! I gave him my reasons for staying, explaining why I would not. As often as they get my order wrong, and as I have to then park and go inside the store to get it fixed - I prefer to wait here.
Boy was he mad. “We do NOT get orders wrong. MOVE UP!!!”
I asked him to tell me what I’d ordered. And paid for. He read back the order. The wrong order.
“SEE!!!” I yelled back; “This is why I do not leave the window.”