go to the dealership on a saturday and make noise. They want to sell cars and you making noise about them blowing up your car while in for service does wonders. Do not let them push you into a out of the way place. Be the squeaky wheel. And let FORD know that to you, they are ford, not an independant company.
Worked for me when they blew a transmission in my truck while they had it.
The also should have given you a written estimate of the repair required. Even if you did not have the repair completed. Sounds like a bad place to do business with.