Volkswagen India — improper repair

Address:

Ernakulam, Kerala, 683542

My car was given for repair but was not repaired for the diagonised issue and even after repair the car is not in running condition. After delivery for the first completion the car got brokedown within 10 mins with the same trouble. After the second repair during delivery they said the evap is not working. The engine alarm was on. They garanteed to run the car that there is no issue. I refused for that but still they garanteed and i was forced to take the car. I ordered for the pirge valve. Today morning i was on emergency but my car got brokedown in midway. Iam really worried about what service they have done.
I need a proper diagnosis for the car.
Please help