To quote from the Warranty Info pamphlet: "If you're not happy with the solution provided by the dealership, call the Scion Customer Experience at (866) 70-SCION...."
If the dealer has been sued as often as you say (how'd you find out?) then it's no surprise you're having your problems. Too bad you didn't know his track record before you bought. You can have your revenge by writing him up at
www.dealerrater.com .