Axle Hubs problems of the 2005 GMC Yukon

On 23 March 2005 at 6:30am, I was driving my 2005 Yukon denali in a 15mph school zone on a military post when my driver's side rear tire came off. When I skidded to the side of the road and got out, I noticed that one of the lugs was broken off. This was the cause of my wheel coming off. I was only driving between 10-15mph. I was the only one in the vehicle and there were no injuries. When the tire came off the vehicle, 2 cars in oncoming traffic had to swirve to miss it. When I called the dealership (cutter Dodge/GMC in waipahu, hi) the finance manager told me to call the service department. I purchased my vehicle on 05 March 2005 as a demo. I haven't had the vehicle for even 3 weeks. When I talked with my insurance company on the phone, they told me to check with the service department to see if it was covered under warranty since it was a new vehicle. When I towed the vehicle to the service department, they told me it would take like an hour to do an assessment on everything to see how the problem occurred. If I was on the highway going 55mph, I could have lost my life!!! the service manager after 2 hours said that I would be granted a rental car for the day, and they would have to do an investigation. Today, 24 March 2005 when I went to the service station, they told me that they would take care of all the damages that were caused to the rotor/body/axel or shaft. They extended my rental until Monday. At this moment, I do not feel safe in this vehicle. I paid over $53,000 for this vehicle. I want another vehicle. They can have this vehicle back and get me another one just like it!!!! I will do whatever it takes to get another vehicle. Either I will go to the better business bureau, GMC, or the local news. Just like I said, I do not feel safe driving in this vehicle!!!!!!!.