So I used to work at an organic grocery store where upper midd class families came to shop for juices. Generally, the customers were all considerate and weren't at all rude to me (I was a cashier), but there's this one man who showed up every couple of weeks with his, I assume, wife and he was a nightmare.
Every time he'd go to check out we'd all be praying he wouldn't come to us because he was NEVER pleased with anything. One day, it was because the milk that we had in the refrigerator was set to expire in about a month probably but that was WAY too soon for him so he came up to me to complain and when I asked if there was anything I could do, he demanded that I go in the back and get him 12 gallons of milk. I did a pained smile and told him okay and went to get a cart for 12 very necessary gallons of milk because my supervisor overheard and told him that it was "no problem at all". I came back with the 12 gallons and he had left the building because apparently I was taking too long (I had only been gone for a minute when he stormed off).
I hate retail.