2011 HYUNDAI TUCSON Structurebody Problems

ON OCTOBER 17, 2019, I DROPPED OFF MY 2011 HYUNDAI TUCSON AT KOON'S WOODBRIDGE HYUNDAI TO HAVE THE UNDERBODY CORR. PREVENT. SVC. 17-01-039 ' 945 - FIXED. THE DEALER HAS NOW HAD MY VEHICLE FOR OVER THREE MONTHS AND IS NOW REFUSING TO INSTALL THE REPLACEMENT SUBFRAME (COVERED UNDER WARRANTY) UNLESS I PAY THEM $1500 FOR REPAIRS RELATED TO THE RECALL.

HIGHWAY, BRIDGE, FOLLOWING SIGNIFICANTLY FAR BACK. CAR STOPS AHEAD AND I BRAKE IN PLENTY OF TIME (MY SON WAS IN THE FRONT SEAT AND CAN ATTEST TO THAT). CAR BRAKES BUT VERY SLOWLY, NOT IN TIME SO WE HIT THE STATIONARY CAR AND THEN WE WERE HIT MUCH HARDER FROM BEHIND. AIRBAGS DEPLOYED. THE CAR IMMEDIATELY FILLED WITH SMOKE WHICH I ATTRIBUTED TO THE AIR BAGS BECAUSE I DID NOT KNOW ANY BETTER. VERY SCARED, I SCREAMED FOR THE KIDS TO GET OUT OF THE CAR. SMOKE WAS GONE BY THE TIME POLICE ARRIVED. WE WERE OK, MY SON AND I HAD SORE RIBS AND WHILE TALKING WITH POLICE MY LEFT HAND WAS BURNING FROM SOMETHING. NOTHING WAS VISIBLE SO I SAW KNOW POINT IN TELLING ANYONE. IT LEFT A RASH AND WITHIN TIME IT PEELED AND NOW IS BACK TO NORMAL. A FEW DAYS LATER, HAD SOME HEADACHES. WENT...