My girlfriend's 2012 Ford Fiesta has the famous automatic clutch shudder. We have already taken this car to Ford twice and had it 'repaired' (ECU adjustment, then clutch replacement). Ford clearly doesn't have the answers. There is a class action lawsuit going on in America right now for this same thing. Is that the only way to get Ford to work on a permanent fix?
It's often the only way of bringing pressure to bear when you're not getting the right response. I would take it back to the dealer and demand that they fix it. You need to be assertive at this point, and while still being polite let the dealer and Ford know that you are very unhappy with the situation.