re: Retailer/server employees: worst ever customer?

I worked at Wal-Mart during college. I was in the chemicals department(washing powder, bleach ,etc) and some guy who was about 5 ft tall(I'm 6'2) came huffing and puffing saying that we never had cat litter. I told him we had plenty of cat litter and went show him. He called me an idiot and said he needed Tidy Cat litter in the big yellow bucket. I went check the back and we had none and then asked the guy over the pet department, who was at lunch, and he said he ordered some and it would be in the next day.

I stroll back on the floor and he's got his hand on his hips and says "Well?". I apologized and said we would have some tomorrow.

Dude actually put his finger to my chest and said that we were all useless and stormed off.

Saw him two days later at the bank. We made eye contact and he turned around and walked the opposite way.