Front Air Bag Sensor Control problems of the 2012 Dodge Durango

Second issue with air bag. Got 2012 Durango in Jan 2013 - in 2014 had to pay $635 to fix angle sensor in steering column as it was faulty. It was not covered nor recall. Now December 2018 need to replace air bag and wiring. No recall. How are these item not safety issues and recalled. Extremely upset with customer service at corporate. This particular truck has had nothing but troubles since I purchased it brand new. . . . We purchase new only to avoid issues but have had nothing but issues with this vehicle!.