2022 LEXUS RX Back Over Prevention Warnings Problems

HI, I purchased a brand new 2022 Lexus RX350 from Hendrick Lexus of Charleston SC. Since day one I had dangerous issues below: 1. The transmission shifts up and down so hard, I've almost gotten rear ended due to the car and not braking. This I was told by two separate Lexus dealers I'm feeling a hard "transmission gap"-whatever that means. To add fuel to this dangerous defect is my autistic son would need to be specially medicated to ride in the car b/c he panics and tries to jump out. 2. The car also is equipped with a "rear kick sensor" that never worked, The service manager in Charleston kicked my bumper and swore at the car. I had another Service tech on video for minutes unable to open it. 3. The car, scarily, will not start on me or recognize the key. I've been 3 hrs from home...

Car turned on and no driving yet. All vehicle alert signs popped up. This is brand new car. Warning signs including: Anti-lock brak system advanced ultrasonic detection parking braking system pre-collision system blind spot monitor These signs are constantly popping up without any hazard condition. Lexus keeps refusing to do thorough exam because they keep stating there is no issues with the vehicle.