2010 Ford Fusion Hybrid electrical system problems

Just got the car home from the dealer and 1 week after they updated the computer for the same problem again today. Driving the car , wrench light comes on then car idles and goes limp does not go over 40 MPH and the hybrid signal would not go over 20 on the screen with the leaves. Took the car home and then engine light comes on towed back to same dealer who stated it needs a 425 dollar throttle valve that I said it needed last week and was told my car does not have one.

The car has stalled more than 20 times. No warnings to pull over just a engine cut off. This while driving at 30 miles a hour, backing up, turning, acceleration. Sometime taking 4 or 5 more times to restart. The only code found stated that the drive train was faulty. Have returned the car to the dealership 3 times. First they thought it was the battery. Car stalled less an a mile away from the shop. They have now had the car for 2 full days and can not figure out what is wrong with it.