Lenovo — Authorized dealer not service my mobile

Address:

Gorakhpur, Uttar Pradesh, 273014

I bought Lenovo k6 note on Jan 2017 this month mobile bottom options not working suddenly. near by authorized service center I went there given my mobile for service center it' s in warranty their charging some amount for servicing. I spent one day for giving my mobile to service center external condition good problem is internal
In the warranty card mentioned one year warranty for handset nothing other details mentioned why your cheating customers. Sir other problem this time not charge my mobile properly. I went
Customer care Gorakhpur authorised service center staff says this is not under guarantee many time i request service center authorized dear please help me and solve my problem but they did not consider my mobile is useless.
What is the difference between local mobile and branded mobile
Manoj Kumar Tripathi Mob. [protected]