Lenovo — Network related problem

Address:	731235
Website:	Na

Respected sir,
I am amit kar roy, residing in santiniketan, bolpur, birbhum district (Wb). I bought lenovo k3 note in 4th august 2016 at 19.02 pm invoice no-1170 from "premier the mobile store in bolpur with the price of rs 9400.00/-
But the within 1 month i noticed that the tower problem. I reported the problem to the mobile store. But they said it is a server problem of the sim company.
But last 15 days i again reported the same problem.
The shop owner of premier mr. Runu received the phone.
I am working as a faculty in allahabad bank rseti in bolpur.

I request you to please took the matter seriously to solve my problem.

Lenovo is a reputed company. Why customer is facing problem in the present networking world.
I need your kind help to solve my problem.
Amit kar roy
Mob-[protected]
[protected]@yahoo.in