Skoda — poor servicing

Address: Thiruvananthapuram, Kerala

i have given my skoda octavia(KL-01-AX-5400) for first service at 9th september.
after service ,when i got my car and on my way back the car stopped two times at the highway.
and the next day morning my car dint start.
they came to service the next day
but it was so poor service that the mechanic doesn't know actually what to do.
they first said there is a problem with the diesel filter later said that its the relays problem.
in the evening they somehow repaired mi car.
but after 3-4 days the problem continued again the car dint start.
there was no problem till mi first service