Precision Tune Auto Care Two times that I took my car in for one thing, I ended up having major problems with something else the same day. Marietta, Georgia

In June of 2010 I took my Ford Mustang to the Precision Tune Auto Care shop on Austell Road in Marietta, Ga to have an oil change done; after leaving the shop my clutch went out the very next day. The shop manager told me that no one touched my clutch and they weren't responsible for any damages, even though I wasn't having any clutch trouble before going there. After they fixed my clutch I had to take it back to them twice in a week's time to have "adjustments" done to the clutch because I was hearing rough grinding noises when the car was idle and while switching gears .... The shop manager later advised that he could see about getting parts from Ford's corporate office, which was never done. My clutch went out again on 3/14/12 and I was told that I would have to pay for a brand new clutch and labor because my warranty had already expired .... Even though I had had my car for four years before needing the first clutch replacement, I've now had two clutch replacements (technically 4 with their "adjustments") within 1 1/2 years since dealing with them. AFTER I picked up my car on 3/14/12 the driver's side exhaust manifold ended up with a crack in it just hours after I left the shop .... They had just replaced my right and left exhaust manifolds on 8/5/11 .... When I took the car back to them on 3/15/12 they told me again that no one touched anything they weren't supposed to. I wasn't having ANY issue with my exhaust manifold(s) until I left the shop on 3/14/12 and now all of a sudden my car sounds like a motorcycle. Again, they told me that my warranty had expired and they would not do the labor without pay (The right/left exhaust manifolds were bought at Autozone). I will be able to take the exhaust manifold to Autozone for a FREE replacement, BUT I would have to pay Precision Tune for the labor to replace it. I AM NOT going to go back to them to install my exhaust manifold or do ANY other work again on my car. That makes two times that I've gone to Precision Tune for one thing and ended up having to pay for something else MAJOR (Clutch, Exhaust Manifold) ....  I WILL NEVER GO BACK TO THEM AGAIN!!