2004 Pontiac Bonneville

I PURCHASED MY CAR FROM SHARRETT PONTIAC BUICK GMC ON 10 NOVEMBER 2004. WHEN I TOOK THE CAR FOR A TEST RIDE ON 30 DEC I NOTICED A VERY OBVIOUS VIBRATION IN THE CAR. THE SALES MAN SAID THEY WOULD BE ABLE TO FIX IT. I PURCHASED IT ON 10 NOVEMBER AND WAS NOT ABLE TO DRIVE IT HOME TILL FRIDAY THE 12 OF NOV. I WAS TOLD NEW TIRE WAS PUT ON THE CAR. I TOOK MY CAR BACK TO THE DEALER FOR REPAIRS ON 17TH OF NOVEMBER (2 DAYS) AGAIN FOR INTERMEDIATE SHAFT (2 DAYS) AGAIN IN THE WEEK OF 14 DEC FOR A COUPLE OF DAYS STILL NOT CORRECT. I WAS EVEN TOLD BY SERVICE MANAGER IN A PHONE CALL ?THE CAR IS 90% FIXED? I TOLD HIM 90% WAS NOT ENOUGH. AGAIN THE CAR WAS IN FROM 20TH DEC TO THE 22ND DEC I DROVE THE CAR DOWN THE ROAD AND BROUGHT IT WRITE BACK AND STILL I FEEL A VIBRATION. THIS CAR HAS BEEN IN AND OUT AT LEAST 4 TIMES BUT, TO DATE, THE DEALER HAS BEEN UNABLE TO CORRECT THE PROBLEM. ATTACHED ARE COPIES OF THE REPAIR ORDERS THAT DOCUMENT THE DEALERSHIP'S ATTEMPTS TO REPAIR MY CAR. NOTE: I HAD TO ASK TO GET INVOICE OF WORK THAT HAS BEEN DONE. I DID NOT GET ALL PAPERWORK. THEY ARE KEEPING IT OPEN AND IT SEEMS THAT THEY ARE NOT CLOSING IT WHEN I AM CALLED TO PICK UP THE CAR. *AK