Ira Subaru - Service Center

I have brought my (automatic) outback sport to Ira Subaru 3 times. the first time they fixed my alternater and said my brakes need to be replaced, and did so. The second time i brought it was a few weeks aft 3 times. the first time they fixed my alternater and said my brakes need to be replaced, and did so. The second time i brought it was a few weeks after the first, because it had trouble going into drive and also stalled and failed to accelerate after a stop, after the first visit. they told me there was nothing wrong. Now about a month later, it practically feels undriveable. It stalls, it wont shift into drive from park, or reverse, it does not accelerate after stopping at a light or sign, and it had also been making a loud grinding sound. So i brought it back. I was told that it was ice behind the heat shield and drive shaft, and the head gasket. Neither of these diagnoses have anything to do with the cars failure to shift. They also gave the car a courtesy inspection in which they noted that my brakes needed attention soon because they were 7mm, when they should be 10. I finally took it to somewhere the dealer i purchased the car from suggested, all he had to do why try to put the car into drive and he knew it was the transmission. now the car that i paid $6000 for less than a year ago is pretty much trash as it would cost $6000 to repair. More