Fiat Palio Hr 12k 0300 — Poor service

Address: Rohtak, Haryana

My Fiat Palio HR 12K 0300 is lying with ABS workshop, Gurgaon from 11th Jan,2011 for some repairs.
Its almost 4 and 1/2 month, ABS Motors is not delivering me my car.
Whenever I contact them, they simply excused for next day...
I have complained about this to Fiat Toll Free no (Customer Care ) more than 4 times, but zero response from their side also.
Now is there any other way, so that I can get my car back, coz in workshop, they are also replacing my car's original parts with some other cars.

Man Mohan Deswal
[protected]@gmail.com