Spare Tire problems of the 2009 Nissan Maxima

On July 8, 2014 (10 days after the tires were purchased and only the 4th time I had driven on the new tires) I was driving my son to physical therapy (about 15 miles away) on the interstate in baton rouge, the car was feeling a lil shaky but I thought it was the road conditions knowing I had just purchased new tires. When we were returning home my tire light came on and I stopped to look at the tires. I got out looked for a flat did not see any low tires and then returned to driving home. When I entered the interstate my car began to shake again and I stayed at a 50 mph speed just hoping to make it home, after about 5 miles the tire blew out and started slapping the side of my car, I was losing control of the car with my 10 year old as a passenger. I was able to make it to the shoulder of the interstate safely but very scared and confused. As I examined the damage I could not understand what happened to the tire, it was unrolled from the rim, it was peeled in a strip. I was now stranded on the interstate with my child in over 100 degree temperature. We returned the tire to sams club where we purchased it, they ordered me a new tire and told us to call goodyear about the damaged tire, the service center said they had never seen a tire peel off the rim like that one. We filed a claim just as good year advised us to do and shipped the damaged tire. At this point I am driving on a spare tire and have damage to my car that was in perfect condition. I had to take a day off work to get 2 quotes for the damage and I received a letter in the mail stating that the tire was not defective. The goodyear customer service agent was rude and the most unhelpful person I have ever spoken with! I am a hard working middle class american woman and this is the most unjust thing I have ever encountered. I am mentally afraid to drive my car for a long distance and now I have to continue to drive a damaged car. Goodyear is the worst company I have ever had dealings with. Please help!.