2021 AUDI Q3 Seat Belts Problems

I was traveling approximately 50 mph on a highway when we were rear-ended. The car spun around and we were both thrown forward due to the malfunctioning of both the driver and passenger seat belts. Further inspection found the rear seatbelts as well did not function properly. Both the driver and front passenger seats reclined and broke during the impact of the accident. The passenger sustained head injuries and had to be taken by ambulance to the hospital. The driver's left arm was injured.

Two weeks ago my 2021 Audi Q3 displayed a child lock malfunction error. The rear passengers cannot open the door from the inside even after turning off the child lock feature because of this fault. I dropped my vehicle at the Audi dealership in Ontario, California. They called me a few hours later and said that they fixed the malfunction by doing a software update. The next day the fault alert came back. My parents are over 80 years old and I'm concerned that if I get in to an accident my family members will get stuck in the back