Forget that they could not fix the car, it seems like a recurring theme that Ford dealers actually frig up our cars while in the shop. My local dealer gave me my car back with a HUGE chunk out of the drivers door, I was like, WTF???? They fixed it, but damn there is no consideration for people's cars at some dealers.
Sounds like a motor mount, for my $.02.
I have found that a calm approach works, and if it does not, a threat of litigation works wonders. Just don't give the old "I'll sue your ass!!" speech, just a calm reminder that I will contact my attorney because I am a very busy person and I do not have time to dicker with you folks so if ya can't fix someone will appoach will work, but you have to be diplomatic about it.
FORD SERVICE SUCKS BALLS