Consumer Redressal

I purchased my micromax phone first time this brand in my life on 26 September 2014 in Mumbai. After some days I got battery draining and heating issue.I am in Patna now, and submitted my phone thrice in service center.Firstly, they told its battery problem and replace the battery and gave to me after 5 days, again I face the same problem again I submitted and they said may be its board issue they gave back to me after 10 days. Then again the issue was remain the same.Thrice I submitted on 4th november and now its been 15 days I called so many times, the service centre people said we sent the phone to the company and there is no response till now.My jobsheet no is- E040231-1114-13139821.I asked them to replace my set wholly and return back to me a new set or refund my money.I wrote so many mail to micromax against this but didn't get a single reply from them, tried so many times to call them but the customer care number is invalid. Now I want to lodge a complaint against them and will