Parsons Interstate Ford

I took my car to be fixed because of a recall with my transmission clutch. It was the second one they put in. I drove the car down with only that clutch problem left with another issue. It was with the motor mount so now my car idles I took it back the same day and accused them of messing my car up. I asked them what did they do to my car they told me it wasn't their fault. Now I bought the part and getting some other garage to fix it do to Interstate Fords negligence. All they could tell me it would cost $600 for the fix or just buy another car. I would never rely on them to touch my car again or anyone to go there. I thought I could trust them to take care of me and my car.