This has not happened to me in the past 6 years or so but I have been banned from 2 MS fine dining clients and one casual place where you get breakfast, lunch and dinner items. The latter just disappeared from the MSC's job board with no explanation although I knew they were still shopped in my area. It was right after a gave a report that I had to wait XX number of minutes. Received some questions about that and no more for me. No explanation from the MSC.
One fine dining shop client did not like that I reported we had to wait 50 minutes for our entrees where our phantom server was no where to be found but observed at the bar area at the other end of the restaurant chatting it up with the bartenders and guests at the bar who I assumed were his friends. That disappeared from the job board for me as well although I knew they were still shopped. No explanation from the MSC.
Last one? The MSC informed me I was ID'd as a mystery shopper and I would no longer be able to shop that location. That shop went very well and we were in rotation but I think the guidelines of going to bar beforehand or afterwards gave us up. It was the first time we visited the bar afterwards. I saw our server spot us and whisper to the bartenders and managers. They were at attention and overly gracious from that point on. We giggled to ourselves but we do miss that restaurant.
How about you? TIA for sharing.