Body problems of the 2011 Infiniti QX56

I purchased this vehicle from a reputable infinity dealership on January 31,2013 with 41,669 miles,and I also purchased the extended elite protection program warranty for 5 years for $4,978. 00. On may 5th, 2015, I brought this vehicle in for a state inspection sticker, which was rejected because my rear tires were worn out badly with only 15,725 miles on them. These were top-of -the-line michelin ltx with a warranty of 70,000 miles. I brought this SUV into the infinity dealership where it was purchased and they stated that the rear cambers were corroded and rear tows were frozen, and I had to replace the complete rear suspension. None of this was covered on my elite protection warranty. The amount of corrosion underneath this vehicle is astounding, it looks worse than a 20 year-old vehicle. The price of this work was $2,000. 00, additionally my new rear tires were $592. 80. Not what I expected from a high-end luxury SUV, I previously owned 2 Nissan pathfinders with no issues. My vehicle was manufactured in may, 2010, and I realize that there were 2 similar recalls # 10e019000,(safety recall began on July 12, 2010) and a second recall # 10v208000,(safety recall began on may 20, 2010) which states that Nissan was recalling 2004-2010 qx 56 vehicles due to faulty front and/or rear lower control arms in the vehicle's suspension systems. (vehicles sold between November 25, 2009 and may 14, 2010. ) my vehicle was manufactured in may, 2010. I also saw on this website a complaint filed on 11/10/2014, NHTSA id number 10653767; concerning the suspension of their 2010 qx 56 vehicle. It is exactly the issue I had with my qx 56, and I believe that my vehicle should be included in this recall. I had contacted infinity corporation concerning this issue on July 1, 2015, but they did not think these were excruating issues and declined my complaint. ( my case # 19302823 with infinity corporation. ).