[Resolved]  Bagga Link Motors Ltd. — Unsolved Car Problem

Address:

East Delhi, Delhi

I serviced my Maruti Alto from Bagga Link Motors Ltd. Patparganj on 12th Sep 2010.
after getting service for almost all engine parts,which costed me around rs.11800, still i've the same issues with my car like the car's engine is still missing & average has gone down alot to 9-12 kmpl.
When i i visited them again for complaint , they just did normal check up & gave back the car to me.
So again i visited for complaint all the way from west delhi to their east delhi service station, & this time they told me to buy & replace few more irrelevant parts for my car.
So please guide me what should i do now?