HTC — desire 516, htc not replacing or repairing screen under warranty.

Address:

Khordha, Odisha

i purchased the set htc desire 516 on 1st august 2014, it had problem with the lock button. and now without any scratch on the touch glass, the inner lcd is cracked.. and now htc care is not replacing my mobile.. they are even asking me for a sum of rs 5000 for its repair. how can any customer care service centre demand rs 5000. i am having 8 month warranty left in my mobile.. plz help imei number [protected]