I’m going to go classic and name a company that personally wronged me: Noodles & Co. I used to work in a mall and every single restaurant in the mall had a mall employee discount. It was usually a token discount between 5-10% but still it made a difference on your lunch break during an 8 hour shift. Noodles & Co. had no discounts for mall employees and one time I found a hair in my food there. It’s petty but since then I have never returned to that restaurant