Hallmac:Heck! Call your local news channel and ask for the call for action desk. See how the owner likes the bad press all over TV. Bet his customers and his mind will change!!
Hallmac
Yeah, that's a good one too, and it can be EXTREMELY effective.
Just be sure you never want to do anything with them again, 'cause you'll probably be arrested if you show up at their door for trespassing after doing that