HORRIBLE EXPERIENCE BUYING VW VENTO - AVOID LIKE THE PLAGUE!

I bought a VW Vento from the Calcutta dealer (OSL Exclusive) and have had a harrowing time since then. The car arrived without some parts like parking sensors and audio manuals. Some mechanicals were malfunctioning like the clutch and the fuel injector. Repeated e-mails and phone calls elicited no response - apparently VW and OSL's idea of client-service is not to respond to any communication! I the took the car to the dealer who fiddled around with the engine; he did not give me the missing parts. The dealer said that he didnt have spares, adequate tools or even a fully equipped workshop. I then complained to VW Customer Care who said that they would resolve the issues. Up until today - nothing whatsoever. What do you think I should now do to get them to do the job? I have never experienced such awful customer-unfriendliness from any dealer anywhere.

Fuel economyHORRIBLE DEALER IN CALCUTTA, NO AFTER-SALES SERVICE, ONLY HEADACHES!