Air Bag Not Deploy problems of the 2013 Hyundai Genesis

On August 4,2017, I rear-ended another a Toyota fj cruiser at about 45 mph, because they came to a sudden stop on a major hwy. However, the airbags never deployed! this is unlike the time, a year or so ago, when I was rear-ended by a mistsubishi outlander, while at a red light on a city street. That time the head rest deployed and I had minor damage to the bumper. I'm disappointed. For a high safety rating, I expected more from Genesis. Very scary when your life is on the line.

Travel on county road lost control of the car hit the brakes and car would not stop crashed into a fence and had damage on front and both side of the car and the air bags did not deploy. The car was considered a total lost by the insurance company but I would like an investigation about the airbags.