<prompt> Human: So basically, I took my car to a shop this past week because the rear brakes were rumbling. As it turned out, the drum brakes had totally disintegrated and need to be completely replaced. After a couple other items thermostat and O2 sensor, the total parts wound up being 500 and the labor 600. Today, I had a friend check the oil, and apparently its full of coolant, meaning my head gasket has a hole in it. The cost of this will likely be 800. My car is worth 1600, with everything working. When I dropped my car off, it had a weird stutter around 40mph, which is likely due to the bad head gasket. The shop knew of this issue, but complained they couldnt replicate it and replaced the brakes and other parts first. They replaced the thermostat and sensor due to check engine codes that were pulled. Have they ripped me off? Should I go to small claims court? Or should I just suck it up and pay for the head gasket replacement?  <response>: If the shop didnt find the issue, I dont think you can sue them for being a shitty shop. If they didnt replace your brake or sensors, you could, but bad quality service isnt illegal. 