I had an uncle who used to write quite imaginative and clever complaint letters to every company he could think of. He did it not because he had any legitimate reason to complain, but because he wanted free stuff from them. He was scamming them. It almost always paid off, and they would send him some free samples of their product along with an apology for something that had never really happened. I still hope he got his comeuppance for it in the afterlife, but who can say? ;-)

He also stole stuff from hotels, motels, and restaurants. He figured the world was there to serve him. The retail and hospitality trade must lose millions to such people every year.