2014 Kia Cadenza Air Bags & Restraints Problems

My drivers side seatbelt unclips at random while driving which can cause me to get seriously injured in a crash. Despite clicking it in and double checking, it will come un secure while driving

I PURCHASED A KIA CADENZA IN SEPT. 2014. ONE OF THE REASONS THAT I SELECTED THIS VEHICLE WAS THE SAFETY RECORD OF THE VEHICLE. THIS KIA CADENZA CAME WITH DUAL FRONT AND REAR SEAT-MOUNTED SIDE AIRBAGS. ON JAN. 19TH, 2015 I WAS BROAD SIDED WHILE DRIVING THROUGH AN INTERSECTION. MY KIA WAS HIT WITH GREAT FORCE AT THE DRIVERS SIDE REAR DOOR. THE IMPACT SENT MY CAR INTO A CIRCULAR SPIN. MY KIA HAD A HOLE IN THE PASSENGER REAR DOOR WHERE THE REAR SEAT WAS EXPOSED. THE IMPACT WAS TREMENDOUS AND NO AIR BAG DEPLOYED. NO FRONT, REAR OR SIDE CURTAIN. THE CAR HAS BEEN DECLARED A TOTAL LOSS. I TALKED TO THE KIA CORPORATION ABOUT THE INCIDENT AND ASKED WHY NO AIR BAG WENT OFF. THAT WAS A WEEK AFTER THE ACCIDENT AND I AM STILL WAITING ON THAT PHONE CALL. THESE INCIDENTS SHOULD NOT BE IGNORED. THE SENSOR SYSTEM DETECTING IMPACT AND FORCE OF IMPACT TOTALLY FAILED...UPDATED 02/24/15*BF *TR UPDATED 9/21/2017*CN

THE 2014 CADENZA DOES NOT OFFERS A HEIGHT SEAT ADJUSTMENT FOR THE FRONT PASSENGER SO IT IS ALMOST IMPOSSIBLE FOR MY WIFE TO GET IT AND OUT. I CALLED KIA AND I WAS TOLD THAT THEY WERE NOT ABLE TO FIX THE PROBLEM UNLESS I GET THE 2015 MODEL. SO I BOUGHT A SEAT CUSHION TO INCREASE THE HEIGHT . THE PROBLEM NOW IS THAT THE " OFF WARNING LIGHT" FOR THE AIR BAGS DOES NOT ACTIVATE TO ON WHEN YOU SEAT, WHICH MEANS THAT IF THERE'S IS AN ACCIDENT, THOSE BAGS WILL NOT DEPLOY AND COULD LEAD TO CATASTROPHIC INJURIES. KIA STATES THAT PROBLEM WILL NOT BE ABLE TO BE FIXED.MANY CADENZA OWNERS ARE COMPLAINING ABOUT THIS PROBLEM. *TR

I HAPPEN TO BE DRIVING FROM WORK,AND LOUD NOISE CAUSED ME TO HIT WALL,AS I WAS TRANSPORTED TO HOSPITAL. *TR