2011 Dodge Caliber seat belts problems

I purchased this car january 26, 2016. 2 weeks after purchase I contacted the dealer because a weird noise came out of the bottom of the car, like a clink. I was told nothing is wrong, that the car was thoroughly inspected prior to sell and according to them, everything was fine. I suffered a minor crash 3 weeks later on the drivers' side front near the tire with my family and seatbelts did not work, nor airbags were deployed. Because the accident happened in tijuana mexico I could not report it to the insurance.

Dodge recall # s61/nhtsa 16v-668 my air bag started comoing on and off each time with a audio warning, got a mailer "urgent safety recall" "free" repair. Scheduled an appointment ith glendale dodge glendale ca. Service person said he had to do a diagnostic to verify recall eligibility, repir was made. Then I was presented with a $ 150.00 charge for the diagnostic (what was free?) and told that the recall was completed but the air bag light and warning would continue, that wou;d cost me another $ 712.00!