Poor service

I took my car to prestige auto to repair the engine .the fault was over heating.since the car was repaired it was not the same I had back and fourth email with a team leader complaining with the service I got from the dealer.the last time I was told the throttle body is faulty we then decide to take the car to a tested by a different dealer.the car had to be towered because the engine light was on.they found that the car had more problem main fold was broken.i was told to take the car back to the same dealer.i was not told that they will only cover one part. I was shocked when I was told by the dealer that they are covering one part 5000.i have called and send email but the same team leader has not returned my calls