Front Driver Side Air Bag Inflator problems of the 2003 BMW 330

BMW issued recall 13v-172000 in may 2013 and expanded to recall 14v-428000 in September 2014 to include my vehicle. In their letter to NHTSA with regards to recall 14v-428000 they noted they should have enough parts to perform the recall in October 2014. An update to the recall notice on the NHTSA site states "a second notice was mailed when an adequate supply of parts became available, on December 1, 2014", however I have not received such notice and when I contacted BMW they stated on 12/15/14 "due to a high demand for parts, we are experiencing shipment delays but do anticipate receiving an increase in inventory supply over the next few months". They will not provide a date when they estimate the repair will be done. The recall notes that in a collision, the passenger side airbag inflator could rupture and metal fragments could seriously injure a passenger. Based on the lack of additional communication from BMW, and their recent statement that the repair could take several months, I am filing a complaint on their lack of urgency to resolve a serious problem that has been known at least since July 16, 2014, and should have been known on may 2013 when the original recall 13v-172000 affecting a lower number of vehicles was originally issued.