Xiaomi India — Non cooperation by service centre staff

Address:

Vadodara, Gujarat, 390006

I have given my Mi4i to service centre at Vadodara situated at At Trident Complex, Race Course Circle, Vadodara due to non working of its LED display on 8th March 2016.
It's 26th April, 2016 today and still they are not servicing the phone mentioning the reason that the parent service centre situated at Bangalore is not providing any part of the phone which is required to repair.
The customer care toll free number is also not working and the local service centre number always remains in no reply mode.
My job sheet number is JS[protected].