When I still did car audio, I worked for a company that had about 6 stores and sold white goods, small electronics, furniture, AV, etc. One day, I drove a car to the front parking lot and was approached by two guys in a white van for this and they got about ten seconds into their spiel before I asked "Can you not see what's on my shirt?". It was the company logo. I told them to leave or I'd call the police.