Reliance Fresh — reliance fresh warranty take almost 3 months

Address:

Panipat, Haryana, 132103

My name is pawan kumar.
I purchased a phone sony xperia c4 from reliance fresh near railway road panipat with extended warranty of one year from reliance.
My mobile got some problem on[protected].
So i go to reliance fresh and contact the person from whom i purchased the mobile his name is kapil verma.
He receive the mobile and give me receiving dated 16/05/2017. He says max.in 15 days mobile will be on working fine condition.
But now i am here for complaining about him he gave me date after date and till now date 6/8/2017 almost 3 month gone but he still says we need 7 more days to repair your mobile.
I don't know what to say him so i dicide to file complain against him.