Side/window Air Bag problems of the 2006 Infiniti FX35

I received a letter in the mail from Infiniti indicating an important safety recall of the passenger side airbag. The letter indicated I would receive a second notice soon. I waited two weeks and did not receive an additional notice. I called the main national consumer affairs department and a case was opened. I have since called five additional times and received no call back. Nothing has been done to correct this important recall. My case number 23964340. This has happened in the past regarding the bubbling of my dashboard. This also was a recall and when I finally called because I did not receive a notice of this problem, I was told that recall had expired so I no longer could take advantage of it. I continue to get the runaround every single time I call or email. I can never get answers or anything fixed. This is incredibly frustrating especially when the letter indicated that passengers should not ride in the passenger seat because of this recall and danger. Again I have not heard anything from Infiniti as promised or when I have called. The last time I spoke with a representative was on September 8. Please help. Thank you.