NHTSA Complaint #11634387 — 2004 ACURA MDX

Airbag light has been lit for a while now for my 2004 Acura MDX. I originally took the car to Courtesy Acura for them to check what causing it. They told me that the sensor should be replaced and I paid $260+. After replacing sensor, the Airbag light still lit. They told me that they need to replace the front seatbelt buckles. One buckle (PART NO: 04813-S3V-A62ZC) arrived but the other one has been backordered for a while now (almost a year) and there's no ETA from American Honda on when the part (PART NO: 04816-S3V-A61ZC) will be available. This is a safety issue since the Airbag will not deploy in case of accident. Hope you guys can help me expedite the process and escalate the issue with American Honda. Thank you soo much!