Transmission Not Go Into Gear problems of the 2006 GMC Yukon

One of the owners of the car was driving it to work when the car stopped pulling and would not shift gears. Before this happened, on a few occasions the car had to get a jump from another car to start. Last, the lighter did not work. When the owner got off work in the morning he had the car towed to the dealership to be checked. Later that day the owner was told that the transmission went out and the part was under warranty. The owner was also told that he could not get a rental car. The next day the owner was told that headquarters didn't want to replace the transmission but he could get a rental. Later in the week the owner was told to take the rental car back and the dealership was not going to pay for the rental. The owner was also told that he would have to pay $3500. 00 for a new transmission. Afterwards, the owner spoke to someone at headquarters and they said the owner would have to pay at least $1500. 00. The owner does not have the money to pay for the repairs and believes he should not have to pay for the repairs due to the fact the car is not three years old until the end of January.