A couple of years ago, I had just made a cup of tea, and was about to wander back to my office when I heard a phone ringing in the marketing office next to the kitchen. There was no-one in that office at the time, so I did the decent thing, and went in and picked up the phone. It was a researcher from one of these TV programmes, asking us to donate materials. His pitch was that we would be featured in the credits, and our logo would be plastered all over prime-time TV.
I was incredibly polite, but explained that as a trade-only business the very last thing that we wanted was exposure to retail customers, and that we already had a charitable giving programme, so whilst we were flattered to be asked, it wasn't something that we would want to pursue.
The chap on the phone went from being persistent, through being condescending, and ended up getting quite aggressive. The more wound up he became, the more politely, but determinedly negatively I responded.
In the end, he insisted that I was failing to understand how big a mistake I was making, and demanded the phone number of the Managing Director, which - acccommodating fellow that I am - I gave to him.
I just had time to get back to my office to take his call.