Transmission Fluid Leaking problems of the 2009 Chevrolet Traverse

I called to make an appt. For an air bag recall when it started slipping out of drive while driving. I could not get one for five days. I was told not to worry it would be fine. I barely made it to the dealership, reverse was gone and I had to drive slow and drop it into low, when it would slip out of gear I just prayed the guy behind me would not rear end me. They told me that this was also on recall and they would fix it for free. The next day they called and told me I would have to pay $6000. 00 for a new transmission, when I told them I wasn't paying anything he said he would talk to gm again. Then he called and said it was $4000. 00! I told him again I wasn't paying anything and he said he would talk to his general manager. Then he called and said the general manger would override gm and only charge me a $500. 00 recall deductible. This is crazy!! this car has had numerous recalls, timing chain, air bags, faulty seat belts, heated washer fluid mechanism causing fires, and now this. The last recall I took it in for they informed me that the master cylinder is leaking into the power brake booster and want $600. 00 to fix that. He told me to drive it until the brake light came on and fix it then! this model also rolls in the opposite direction of the gear it is in. I have been told it is a "feature" of this model. I have searched on line and found several complaints about this for other 2009 Traverse's. Some state that it is a "characteristic" of this model. The truth is it is a flaw. It can't be fixed and they don't want to recall the vehicle. They gave me a loaner that is a 2013 Traverse and it doesn't do it. I have to drive mine like it is a straight drive. I live in the mountains and if I stop on a hill I have to leave my foot on the brake and give it gas before I take my foot off or else I roll into the car behind me. This car is a lemon, something needs to be done.