The one by someone saying they received a complaint from a passenger in a taxi because their business was advertised on the side of it reminded me of a complaint I received when I worked at a packaging company.
We make large woven bags for use in the building and farming industries. We didn't fill them or anything, just made bags and sold them on. They usually had the customers logo on them with ours much smaller underneath.
Some companies would buy the empty bags, fill them with fertiliser, and sell them on full to farmers.
I took a phone call from a man about 300 miles away complaining that one of our tractors had just nearly killed his wife and children.
We didn't have any tractors. We had a small van that was at the other end of the country from this man at the time, but we used a haulage company for our deliveries. Definitely no tractors though.
I tried to explain this. "Well it had your produce on the back, my wife saw your logo."
I explained about the bags. "Well give me the farmers name then!"
I explained that we didn't deal directly with the farmers and didn't know his name. "Well then you phone your customer and find out his name!"
I explained I couldn't do so as we had hundreds of customers who had hundreds more of their own.
In the end I took a number for my boss to call him back, as he now wanted to complain about the farmer and about me, as I was obviously "in collusion with the money man" and that I "did not care about the lives of young children."
Boss rang back and got an automated menu for a sexual health and AIDS research centre.
Boss put the phone down and accused me of making it all up to trick him into ringing a sexual health and AIDS research centre as a joke.