2017 HYUNDAI VELOSTER Seats Problems

MY ACCIDENT THE AIR BAG DID NOT DEPLOY HITTING ANOTHER VEHICLE IT DEPLOYED AFTER HITTING A CURB WHICH WOULD HAVE BEEN 2 ND IMPACT TO DEPLOY IT SHOULD HAVE COME OUT THEN, THE BAR IN THE HEAD REST CAME OUT WHICH CUT MY HEAD AND I RECEIVED STAPLES IN MY HEAD. WHAT THE OTHER METAL THINGS THAT FLEW OUT OF THE STEERING I DON'T KNOW BUT THEY CUT AND BURNED MY ARM VERY BAD. I WAS GOING STRAIGHT ON A TWO LANE STREET. WHEN THE CAR BACKED INTO TO THE INTERSECTION IT DID NOT COME FROM MY RIGHT OR MY LEFT. I WAS 3/4 OF THE WAY ACROSS THE INTERSECTION WHEN THIS CAR APPEARED BACKING UP. I COULD NOT STOP IN TIME AND HIT IT IN THE REAR OF THEIR CAR.*DT