There are two occasions recently where I've gotten horrible service.
One was at a Domino's where I came into to pick up food I'd ordered online. I came in and was not greeted by anyone, even though there were three workers at the store. All one of them had to do was hand me my food and say "have a good one", but instead it took one of them 10 minutes to acknowledge my presence and gave me my order while giving me the stink eye and didn't even say thank you. I immediately gave them a bad review on Yelp afterwards, it's still the only one star I've given on that site so far.
The other one was at an American Eagle, where this douchebag rang me up and didn't say anything to me except the total (in a rude tone). When I tried to apply there I figured out he was the assistant manager

I won't be going back to that location until he's leaves, or better yet, is fired.