Lenovo — Lenovo k3 note - k50a40 - touch issue

Address:

560087

I've given my cellphone to HCL Bangalore Service Center (SRIN[protected] on 20 Dec 2015. They said it will take 5-7 working days for replacing the screen since the touch was having issue (common issue with most of K3 notes). Now they are not picking the call. Chat rep provided Supervisor's number ([protected]@+91-[protected]) who keeps disconnecting the call. Have tried calling his number for more than a week now with no luck. I need help in getting my phone back and also training people to answer customer calls.