If they haven’t been fired, they should have. The first one was a bartender. My report said some guys were drunk and hitting on a woman who clearly did not want it. She kept serving them. The next time I did a shop, she confronted me, saying I was a mystery shopper. Then one of her coworkers approached me. He said he knew who I was and I had better be nice!!!! I was afraid to eat the food, in case they spat in it. I told the company they did not have to worry about banning me, because I was too afraid to do another job where I consumed anything there.
Another time, I reported an associate for arguing with me and shouting to the store about me!
On a hotel shop, I did my bit and went to the desk to check out. The guy would not give me a refund (or receipt) for only being there an hour. The MSC followed up with me. He had not reported the money. It was pocketed.
At one gas station, I brought discounted candy to the counter. We argued about the sale price. I asked if there would be a 1-800 number on the receipt. The associate just said to take it all. I insisted I would pay, but she just waved me off. For the receipt proof, I provided a huge pile of candy!
I am sure there were others, but those were the ones which stood out.