Motor problem

The car stopped while driving. The car started up again after a while and was taken to a tow truck. The car did not start anymore when it arrived at the carshop. Diagnosis was to install a new engine belt before the carshop knows if something else is still wrong. After som work in the car, they put a service A3. 3402 Timing belt and coolant pump kit - at (Remove and install) Car parts Rebelt CT1203. They installed a new timing belt to test engine start. When testing the engine, they noticed that the compression comes out - sucked in - and the car starts in 3 seconds and stops. Does not make the car idle longer than one 3 seconds. Conclusion : Valves bent/broken. Engine should be changed - or change valves.