Worst Dealership in South Africa Beware

ON JUNE 2014 I BOUGHT BRAND NEW ASTRA ESSENTIA I DIDN'T KNOW ITS THE DAY OF MY NIGHTMARE ,I DROVE THE CAR FOR SIX MONTHS ,OUT OF THE BLUE IT GAVE ME A PROBLEM WHEN I START IT ,I TOOK THE CAR TO GM IN CENTURION AND THEY TOLD ME ITS A CLUTCH,THEN IT WAS FIXED KNOW ITS NINE MONTHS ,MY CAR WAS VIBRATING TOOK IT TO CENTURION GM ,THEY TOLD ITS A CLUTCH AGAIN ,AND I MUST PAY 15 000 BECAUSE ITS MY FAULT ???? TECHNICIAN SAID SO...IN A YEAR I HAVE TO FIX CLUTCH TWICE THAT'S MADNESS...GM IS A DEALER OF NIGHTMARE I WONT RECOMMEND ANY OF MY FRIEND TO BUY CARS IN OPEL NEVER..EVER