Lenovo — Mic issue

Address:

411027

I am lenovo K6 power user. I purchased this mobile phone some 20 days back. After 10 days o[censored]sing mobile i started facing Mic Problem i.e. person at the other hand couldn't hear my voice. I went to service center yesterday and they took mobile for repairing and told me that they"ll call after 7 days. This is highly intolerable and i can not anything for 7 days since i have only that Phone. Your other service centers are doing the same work in 3 days time whereas this one is taking 7 days. i did not bought this phone for all this. Please look into it and do the needful.
Service No. SOIN[protected]
Service center is in Pimpri, Pune.