Micromax Informatics — Micromax Service Center Fraud

My phone ( in note 1 ) heats insanely during charging(due to its faulty ic or wiring), which cause its battery to bloat.
Now, when I bring my phone to the service center within its warranty period, they are charging me the cost of the new battery for replacement ( battery also has 1 year warranty ).
This is total fraud. They took the money and phone in advance and till now ( from 29 Oct ), they didn't returned by phone and when I calling the service center ( not in my town ), they are rejecting my phone calls.