Air Bag Not Deploy problems of the 2017 Toyota Sienna

Takata recall(?) my husband bought me a 2017 Toyota Sienna in February 2019, it was previously a rental. The van was immaculate and only had about 20,000 miles at time of purchase. On or about March 8, 2019 we were on our way to dinner at about 9 p. M. I was approaching a red light, foot on the brake, maybe 15 mph and I looked down for a second and ended up rear ending a vehicle and in the end there were 3 vehicles besides mine involved (4 total). There was significant damage to my van, the plastics crumpled and it appeared to have no major damage outside of the plastics. The air bags did not deploy despite the front end collision. At the body shop, upon tear down the passenger side rail was damaged as well as the air bag sensors were crushed. One would think if the sensors were crushed the air bags would have deployed prior. In order to replace the sensors it would require a new wiring harness and to replace that would require removal of engine and transmission. My $26,000 2017 Sienna with less than 50,000 miles was totaled. The airbags should have deployed and didn�t. There was no �hard hit� and no significant damage to other vehicles (rear bumpers) or to my husband or myself. My first concern is the air bags not deploying, the second is having had the van totaled over a �minor rear end collision� .

Our 2016 Sienna which we purchased last may accelerated on it's own on 2/16/2017 going through our south outside wall and master bathroom of our house. My husband left the van in the driveway, unloaded the groceries, then got back into the van, started it, put his foot on the brake, shifted to drive and with his foot on the brake the van accelerated into the the garage. We have an extended garage which had an office area and it proceeded to push the oak desk through the south east outside wall and master bath. As it continued to accelerate and burn rubber on our finished garage floor, with his foot still on the brake slammed it into reverse. The Sienna shot out of the garage, headed down our drive, into our lawn and over our winter snow stakes. Knowing it was not stopping and the brakes were not working other than letting him put the car into gear, he once again slammed it into drive. The Sienna shot into the garage a second time, hitting the s. E. Wall and yet again continued to burn rubber on our floor as it pushed the desk further though the wall. Once again, completely beside himself my husband slammed it into reverse and when outside it finally stopped after he stomped on the breaks with all his might! the air bag did not deploy nor did the brakes every begin to work to slow it down. We will never drive this vehicle again and it is being stored at carlson Toyota until we know what Toyota headquarters intends to do about this problem. We also need to know what we are to do beings our Sienna was paid for and now it is worthless to us.