These buggers send your company letters saying your domain is about to expire, send money to keep it. Turns out, they transfer the domain to their hosting service. They've even got a UK address. Sign 'em up for every free newsletter, catalogue and mailshot you can.
The Domain Registry of America
56 Gloucester Road, Suite 526
See Map or Satellite Photo
DDoS their website at http://droa.com
Phone their customer service department on +1 905 479 2533
Email or spam their firstname.lastname@example.org?subject=Support+Request Support Department, email@example.com?subject=Sales+Information Sales Department or their firstname.lastname@example.org?subject=General+Inquiry Info address
Alternatively, if you're in the US, sign them up for stuff at this address:
Domain Registry of America
2316 Delaware Avenue #266
Buffalo, New York
Cheating scumbags - go get a grip you shoddy excuse for a company.
If you're looking to renew your domain, and don't know where to turn, 1-2-3 Reg are pretty good (crap name, but good service).