CVS review: Cashier

How can you tell when a cashier hates his job? When he is totally rude even when your not. He wore his attitude in his face and how he spoke to me when I was simply trying to say I didn't want to put up all my extra bucks until I had an idea of what I owed and he then stated he could whatever he wanted per the cvs policy. I told him he was being rude but he blew that off then stated you have x, y & z available and then took another 6 dollars extra buck which was more then what I actually had to pay out of pocket resulting in a loss. Joseph needs a job we're he doesn't come in contact with people because you can tell he hates them. I've never put complaints in writing but feel someone should hear this.