I own a childrens entertainment company, we provide clowns, magicians, and various characters for children's birthday parties, santa claus, easter bunny, etc.... Last month I approached the owner of a jumping castle rental/pinata shop, about referring customers to each other since our services complement each other and our markets are the same. It was supposed to be beneficial for both our companies.... I didn't get anything in writing. I have now found out that he is telling his customers that he is part owner of my company. This can't be legal, but I cannot find any advice regarding this matter. How do I get him to stop? I have tried cutting all connections with him, as I realized he was not someone I wanted to do business with. I'm worried he is tarnishing my company's reputation. Thanks for your input. I don't want to sue, but do I have other options?