[Resolved]  Lenovo — fraud service

I have a lenovo k6 power (4 gb rem, 32 gb rom) mobile which was perchased before one year from flipkart, but after use of 2-3 month mobile was hang or some other problem was there, so i had given my mobile in lenovo service center (Jamnagar) for check thess all problems which was in my mobile. I did submit my mobile in customer care and discuss all the problem which was i face. Then they were told to me after the updation in your mobile, your device will run normal means no any problem will create. Now after one week i had received my phone from service center and was used regular as usual, again after 2-3 month same problem was there and again discuss all the issue which was i was faced & further submit my phone to lenovo service center, jamnagar. Once again they were told to me your phone will be run normal after system updation, now further i received my phone from service center after service and did use as routine, after use of 1 or 2 months again same problem found with some new problem, now my warrenty is near to finish within one week. I was not feel satisfaction by lenovo k6 power or by lenovo service center, now what to do? Do needful.