Here's a article of a customer taking AT&T to small claims court over throttling.
http://www.msnbc.msn.com/id/46520148/ns/technology_and_science-tech_and_gadgets/#.T0pSdPW8-So
http://www.msnbc.msn.com/id/46520148/ns/technology_and_science-tech_and_gadgets/#.T0pSdPW8-So