I had a shop where initially it had a 2-week window to do the shop anytime I felt like but then they said Mondays only from 8am-10.30am only. I did the shop today and there was only one person working there and they were horrid. They completely ignored me for 15 minutes when I came in as they seemed to be chatting away on the phone then texting or playing a game, completely ignored what I said, gave me the wrong advice, talked down about the other customers in front of them and said how awful they all were, and did just about everything wrong - though not as bad as I've seen. I wonder if the owner had set this up because they wanted an excuse to fire them. Is this the sort of thing that other people have experienced? Do managers use mystery shoppers to justify firing someone?