Consumer Redressal

I bought Micromax Canvas 4 on 11/08/2013. After one month the handset started malfunctioning. Within the one year warranty period I had to visit the authorized service center at M/s Sabsonic, RGM-170, VIP road, Teghoria,KOlkata-700059, around 6-7 times. Every time they would keep my mobile for more than 10 days. After each repairing the some new problem along with the older ones comes up. Last month on 26/07/2014 I have submitted my handset under job sheet no:E030435-0714-11123565 again for repairing at the same service center. They sent my mobile to their Delhi office for repairing. Time to time I contacted them for the status of my handset but they never gave any assurance of when would I get my phone back.I even mailed them at info@micromaxinfo.com and service.supefone@micromaxinfo.com, but after 2-3 mails theyt stopped responding to my mails. Initially they asked for 15 days and then on 21/08/2014 when I called them, they said they have extended the time required for repairing.