2019 Cadillac CTS Suspension Problems

BOUGHT A USED CAR FROM AUTO BOUTIQUE ON 10/15/19 WITH CAR FAX REPORT SHOWING NO STRUCTURAL DAMAGE. WHEN WE TEST DROVE THE CAR WE NOTICE THE CHECK ENGINE LIGHT WAS ON AND A VIBRATION. WE WERE TOLD TO MAKE AN APPOINTMENT AND THEY WOULD ADDRESS THE ISSUE. WENT ON 10/18/19 FOR MY APPT, WAS THERE 8 HOURS TO NO AVAIL, WAS TOLD VIBRATION WAS FROM A BENT RIM AND THAT I WOULD HAVE TO TAKE CAR TO A CADILLAC DEALER FOR THE CHECK ENGINE LIGHT.MADE AN APPOINTMENT WITH RITCHEY'S CADILLAC ON 10/25/19 AND WAS TOLD THE CAR WAS UNSAFE TO DRIVE, THE GAS TANK ISN'T SAFE, 3 BENT RIMS, THE ACCIDENT CAUSED THE AIRBAGS TO DEPLOY AND WERE NOT RESET PROPERLY, AND THIS WAS ONE CAUSE OF THE CHECK ENGINE LIGHT. THE VIBRATION AND NOISE CAME FROM REAR SUSPENSION BENT IN SEVERAL LOCATIONS, ETC. I HAVE A REPORT FROM RICHIE'S CADILLAC STATING ABOVE, PLUS PICTURES AND A ESTIMATE TO FIX. I NOTIFIED AUTO BOUTIQUE THAT I WANTED TO RETURN CAR FRO REFUND BUT GOT THE RUN AROUND, ALL THEY SAID WAS ALL THERE CARS ARE SOLD AS IS, THE HAVE THE BUYERS GUIDE THAT IS SIGNED WITH NO BOXES CHECKED. THERE ARE NO SIGNS STATING CARS ARE SOLD AS IS. WE TRADED THE CAR IN ON A NEW VEHICLE AND ASKED FOR A REFUND FOR THE DIFFERENCE, $18,000, I WAS TOLD TO RETURN THE CAR AND THEY WOULD FIX THE ISSUES AND CALL ME WHEN IT WAS DONE, I STATED IT WAS TOO LATE FOR THAT BECAUSE I HAD TRADED IT FOR A NEW ONE BECAUSE IT WASN'T SAFE TO DRIVE. WE HAVE AN ESTIMATE TO FIX, PHOTOS AND ALL PAPER WORK FROM THE SALE.