2010 AUDI S5 CABRIOLET Visibilitywiper Problems

THE VEHICLE WAS PURCHASED IN JANUARY OF 2018 WITH ABOUT CLOSE TO 47,000 MILES ON THE ODOMETER. CURRENTLY WITH ONLY JUST OVER 50,000 MILES THE REAR WINDSHIELD IS SEPARATING FROM THE FABRIC ROOF WHICH IN TURN HAS CAUSED WATER INFILTRATION FROM RAINFALL INTO THE REAR AND FRONT PASSENGER SIDE INTERIOR OF THE VEHICLE AS WELL AS THE TRUNK, THIS OCCURS WEATHER THE VEHICLE IS MOVING OR STATIONARY. THIS HAS CAUSED MY BACKUP CAMERA TO PERIODICALLY MALFUNCTION AND ALSO HAS RENDERED THE FRONT PASSENGER SEAT CONTROLS INOPERABLE. I TOOK IT TO THE DEALER TO HAVE ANOTHER REPAIR PERFORMED AND INFORMED THEM OF THE PROBLEM AND I WAS TOLD POINT BLANK THAT IT'S A COMMON PROBLEM AND TO NOT EVEN BOTHER TRYING TO HAVE IT REPAIRED THERE AS THE COST WOULD BE NORTH OF $6000.00. I WAS THEN GIVEN THE NUMBER OF A REPAIR SHOP THAT WOULD GIVE ME A FAR BETTER...