2020 Hyundai Ioniq Plug-In Hybrid 4 DR FWD

I WAS DRIVING ON A 6 LANE RD., NEARING AN INTERSECTION. I WAS IN THE MIDDLE LANE, TRAFFIC ON BOTH SIDES OF ME. WHEN I APPLIED THE BRAKES TO STOP THE CAR, MY BRAKES FAILED. I ENDED UP HITTING THE CAR IN FRONT OF ME. I WAS LUCKY THAT WE WERE ALL DRIVING AT A VERY SLOW SPEED AN I DID NOT HAVE SERIOUS INJURIES, JUST ONE WEEK OF NECK AND BACK PAIN. THE BRAKES FAILING HAPPENED ONCE BEFORE. MY DAUGHTER WAS AT AN INTERSECTION WITH NO TRAFFIC. THE LIGHT CHANGED TO YELLOW. WHEN SHE TRIED TO APPLY THE BRAKES, THEY FAILED AND SHE HAD TO GO THROUGH THE YELLOW LIGHT. WHEN SHE TRIED OUT THE BRAKES AFTER THAT, THEY WORKED AGAIN. THE CAR HAS ONLY 973 MILES ON IT. WE HAD IT ONLY FOR 6 WEEKS AS A NEW VEHICLE. THE ACCIDENT HAPPENED ON JULY 15. HYUNDAI CALIFORNIA HEADQUARTERS CALLED US ON THE 20TH OF JULY. THEY CLAIMED, WE HAD CONTACTED THEM, WHICH IS NOT TRUE.THEY REQUESTED THAT NOTHING BE DONE ON THE CAR UNTIL THEY HAD A CHANCE TO INSPECT THE CAR. YESTERDAY (8/12/20) THEY TOLD US THAT IT WOULD TAKE 6 TO 8 WEEKS TO REPAIR THE CAR. THIS IS FISHY, THE CAR WA IN THE CHICAGO AUTO SHOW AND ENDED UP AT OUR DEALER. I BELIEVE THEY SOLD US A BETA MODEL. BUT THEY WILL NOT ADMIT TO ANYTHING. WE HAVE NEVER HAD HEADQUARTERS OF ANY CAR MANUFACTURER GETTING INVOLVED AFTER AN ACCIDENT. MONDAY OUR CAR RENTAL PAYN=MENT BY OUR INSURANCE COMPANY WILL END AND WE WILL NOT HAVE A CAR AVAILABLE. SO FAR HYUNDAI DOES NOT SEEM TO CARE.