Side/window Air Bag problems of the 2014 Buick Enclave

The "service airbag - passenger" warning light suddenly appeared on the console of my 2014 Buick Enclave. Once I arrived home, I googled what the light indicated and I also sorted through mail I had recently received from Buick that notified me of a recall. Convinced that I needed to resolve the issue promptly, I contacted the dealership we purchased the vehicle from and they informed me to come in so they could hook the diagnostic machine to the car to determine the codes. I went into the dealership early the following morning (work order initiated at 8:21am). I explained the situation again, and was told that they'd perform a complimentary diagnostic test to determine the issue. The service advisor listed "safety recall - driver front airbag inflator may rupture" [I did notify them that the warning light indicated it was the passenger side airbag]. At 9:00 am I received a text message "to review the inspection and approve the recommendations": customer states service airbag message check and advise [other]: diag, need 1. 5hr diag time to test circuits related to passenger air bag for code b0021 passenger seat side air bad deployment loop. (need toi remove seat to test)$389. 93 -- yes, I approved. But when questioning why there was a charge for the resolving the recall issue, I was told, "it's a different issue than the recall. " then I was told they'd need to remove the seat to get to the wires/connectors for the airbag and that cost would be $519. 90 bypass the air bag connector under the seat by soildering the 4 pin connector together. Interbnal fault in connector casuing high resistance. Also add $44 shop charge. The "free recall repair" cost us $957. 46 (I did ask for the military discount since this was totally unexpected and immersed with the planned costs for the holidays). I feel like this is unfair and inappropriate to charge customers for a service that should have been covered. I would have never come into the dealership had it not been for the recall.