Lenovo — Lenovo zuk z1 handset connectivity is not working during net surfing & calling

Address:	Agra, Uttar Pradesh, 282001
Website:	[email protected]

My above handset is not working during net surfing & calling. I given handset in agra lenovo service centre for solving above net & signal connectivity. I given handset lenovo zukz1 5 times within 3 months.in 5th times, handset is under service centre now since about 10days.in 4months, max times is out of order or in service centre in nehru place. He is not solving the problems or nor replacing handset. Service centre is away 15kms my home. Warranty period valid up to july17. He is passing time for expiring warranty period. Also max time he is not attending phone. I complain many times but not given satispectary reply.
So pl solve my problem.
Thanks regards rk lohani m. No-[protected].