2016 AUDI A3 CABRIOLET Structurebody Problems

PURCHASED THIS CAR DECEMBER OF 2018 (6 MONTHS AGO), VEHICLE STILL UNDER WARRANTY. LATE JAN (A MONTH AFTER PURCHASE), WHILE DRIVING ON THE ROAD, THE LEFT SIDE BUMPER GRILLE, A LARGE PLASTIC PIECE FELL OFF. I THOUGHT IT WAS A FLUKE, SO I PURCHASED A REPLACEMENT PART AND PUT IT BACK INTO THE BUMPER. A MONTH LATER IN LATE MARCH, THAT SAME PIECE FELL OFF AGAIN WHILE I WAS DRIVING ON THE FREEWAY, CAUSED A LARGE BOOM NOISE AND WAS A HAZARD TO OTHER VEHICLES DRIVING AT HIGH SPEEDS ON THE FREEWAY. I TOOK IT BACK TO THE DEALER AND THEY REPLACED THE PART AGAIN. FAST FORWARD TO JUNE, THIS SAME PART ON THE RIGHT SIDE FELL OFF AGAIN WHILE DRIVING ON THE FREEWAY AND CAUSING THE SAME ROAD HAZARD FOR ALL VEHICLES. IN SUMMARY, WITHIN A SPAN OF 6 MONTHS THIS PART HAD FELL OFF 3 TIMES. THIS IS...