Micromax
Phone not working

I have bought Micromax q5 from Mobile Store.

But the phone stoped functioning, I sent the phone for repair to authorised service station in Patel Nagar under warranty.

It has been 2 months since i have given the phone but no result. I recieved the call a week before stating that phone has been repaired but when i went there phone was not repaired at all

and also the track ball, battery, and back cover was missing.

I need my phone teel me what has to be done.