Micromax — I can't hear voice through my ear phones though I got a replacement.

Address:

Hyderabad, Andhra Pradesh

I bought Micromax Canvas A091 mobile set.Using warranty card I recently replaced my earphones as they stopped working after three months from the purchase date.So I have gone to Micromax Service Center and the handset they've provided isn't working properly and all the stock they have seemed to convey only music but no voice.So please resolve this issue as soon as possible