Bay Ridge Subaru

My problem with this dealership is, in august my car overheated and I brought it to be check and was told they couldn't find the problem. Was told it could have been that it was in the 90's and I was stuck in traffic for a few hours but the car should be fine. I only use the car for mostly family trips on the weekends. About a month later I drive to Boston and on the way home it overheats again. I again brought it back and get the thermostat replaced. A few weeks later I drive to montauk and there is air in cooling system, bring it back they say it's fine and bleeded it. A few weeks go by and it overheats again, thermostat is replaced again. I took a long drive last weekend and it overheated again. Now they tell the head gaskets and water pump are bad. While my car was under warranty they were not able to find the problem, now my car is out of warranty and they now they found the real issue. They probably let warranty expire so they could charge me for the repair it initially needed while it was warranty.