BAD DEAL

ON JULY 14,2008, I WENT INTO THIS DEALERSHIP AND TRADED MY 2005 TRUCK FOR A 2008. THE DEALERSHIP SAID THEY WOULD PAY OFF MY TRADE IN. AND ITS BEEN TWO MONTHS NOW AND THEY STILL HAVEN'T PAID FOR IT,CAUSE I KEEP GETTING THE STATEMENTS. AND OF COURSE MY CREDIT GETTING RUINED.I KEEP CALLING THE OWNER "SEAN" AND HE KEEPS LYING TO ME,SAYING THAT THEY ALREADY SENT THE CHECK, AND ITS NOT TRUE.NOT ONLY DID THEY STUCK ME WITH A BIGGER LOAN THEY ARE RUINING MY CREDIT..HELP