Micromax — Micromax canvas knight cameo a290 not charging

Address:

Chandigarh, Chandigarh

I am from Ludhiana and I bought the handset in the city itself. After about 2 weeks, it started showing problems in charging. Initially problem was minor but after a week my mobile stopped charging. So I gave it to a service center in Chandigarh since my college is in Chandigarh and I had been living there. They said I would get my mobile back in 10 days and asked to call them after 1 week. This went on and I got my mobile back after about 2.5 MONTHS. I kept calling them twice every week and they made excuses every time. I tried to complaint at their customer care but no action was taken against them. I even mailed my problem to their email but all they asked me was to wait patiently. Now after 1 week of getting my mobile back, it has again stopped charging. Now I am currently residing in Noida because I have my internship here. What should I do ? Where should I complain ?