Yes, I've had emails from M&S and I've never shopped online from them, so I don't know why. I just ignore them now, although I reported the first one to M&S as I thought it must have been a scam.
The other day I got a phone call from someone who gave me the wrong title (being a Dame is so difficult ) and pronounced my name as if it was a common variation of my name. She said she was from "the bank" and wanted to do a survey. I told her that as she didn't have my name correctly, I didn't believe that she was from the bank so I didn't want to do her survey. It occurred to me later that she didn't say which bank, so I'm pretty sure it was dodgy.
I also hate it when waiters come up to you when you're either in the middle of a conversation or enjoying a delicious mouthful and say "Is everything all right for you?" and you know that they have been told to do it and they probably aren't interested anyway. In places where they take food seriously, they have confidence in their food, and know that the customers would soon tell them if something didn't come up to standard.