Lenovo — Poor response from service centre

Address:

Chennai, Tamil Nadu, 600080

Hi,
Im J.Rajkumar, im a lenovo k6 note customer. I had given my phone to service center of following address(:Hcl Touch, Ground Floor, Habeeb Towers, No.196(Old No.756), Vasan Avenue, Anna Salai, Chennai), for navigation keys problem. My complaint no is [protected]. Initially they said one week to return but since 14 days have gone i didn't get my phone back. The people in the service center are not picking up the phone to reply. when i went back by seventh day of complained date, i had a poor respone from the peoples of service center. This is my last product im ever going to use on lenovo brand.