AutoNation Buick GMC West Sahara

We brought our 2012 Buick Enclave in for service when the AC stopped working and we requested an oil change during this service for good measure. Two days and almost $3,000.00 later we left with a working vehicle until the next afternoon when the AC died again. We brought the vehicle back to them and were asked to pay for additional AC service which we calmly disputed as the AC was just repaired about 15 miles earlier. They didn't respond well to this request, and then they stopped responding at all, so we just went and picked up the vehicle to take it somewhere else after the weekend. After driving the vehicle for another 70 miles and in the middle of busy traffic the engine stalled completely out , every error alarm started to sound off and then liquid began spraying out of the bottom, center, of the engine which stranded my wife who was lucky enough to be able to pull into a parking lot. We are having the vehicle towed to another Service Mechanic which is going to cost us AGAIN but I am willing to pay more so I don't have to deal with the service people at AutoNation Buick. Needless to say we are never doing business with this place again.