Micromax — Not getting proper warranty support

Address:

Kolkata, West Bengal

I have purchase a micromax MT500 on 26/07/14.It had many complications that it already wen for service 3 times.After last time service they took around Rs.3800/- for repair as the screen had broken and that was not covered under warranty. But after servicing also, it again stopped working after 2 week o[censored]se.The service center executive told this time that it can't be repair without price as some ear phone link is broken in the main mother board. and they ask me that it will take around 6000/- cost to repair. I bought 1 year extended warranty on the time of purchase the handset.But in the 1 year of warranty period also they are not repairing the mother board or whatever without cost.My question is if the handset was defected, then why they took around 3800/- for repairing and give me a difected one which i need to repair again with around 6000/- rupees.