Air Bag Not Deploy problems of the 2003 Dodge Grand Caravan

I purchased my Dodge Grand Caravan sport 2003 brand new off the lot in Nov. 2002. I kept it in mint condition with all maintenance logs filled out. At the time of incident there were only 95,000 miles on the van. It had never been in a wreck before. On Jan 18 2015 while driving in the mountains I hit black ice and lost control of the vehicle. It flipped front to back, did a 180 mid air, landed on wheels then rolled at least once to the left, landing on the wheels again. The airbags never deployed. My passenger and I both had our seatbelts on however I still lifted up and hit my head on the roof and the windshield. We are still assessing our injuries. I am extremely concerned as to how I lifted out of my seat, basically the seatbelt did not tighten to me. Also why didn't the airbags deploy? has there been a recall concerning the airbags or seat belts or other that I was never informed of?.

The contact owns a 2003 Toyota corolla. While driving at approximately 40 mph, the contact's vehicle crashed into the rear of another vehicle. The air bags did not deploy. A police report was filed and there were no injuries reported. The vehicle was taken to an independent mechanic where it was not diagnosed. The vehicle damages were repaired. The manufacturer was not made aware of the failure and the VIN was included in NHTSA campaign number: 15v043000 (air bags). The failure mileage was approximately 71,000.

2003 Dodge Grand Caravan engine died while driving for no apparent reason causing a major accident and injury to my wife. Power steering and brakes became inoperable and airbag did not deploy.

: the contact stated while driving 30-40 mph, the vehicle struck a cow. Upon impact, the airbags did not deploy. There was prior braking and the impact was on the grill. There was a police report taken at the scene, but there were no injuries. The vehicle was towed to an independent repair shop.