Micromax — Too much delay from service center and they are not giving me proper response.

Address:

New Delhi, Delhi

I had visited hans services (A micromax service center) on[protected] and handover my cellphone which was not working properly. They given 10 days time to me for repair and return of my handset. Now its been more than 20 days and still my handset is not repaired. I am calling them continuously since last week but they are not able to give me any certain date, when they handover my handset. Kindly help me out and resolve this asap.