The next time you buy a domain, do it yourself! Go to the domain registrar, set up your own account and use your own credit card. If anyone else works on your site, give them a password to do the work, and then change it once they are done.
There are a number of ways that trademark owners deal with cybersquatters. Rachael Ray recently instituted an UDNRP arbitration proceeding against an Indian company that had registered www.rachelray.com (note the missing "a").