Apple India — Iphone 6 mobile not getting on

Address: Thiruvananthapuram, Kerala, 695002

Apple handset 6 32gb grey
Serial no: sffmtd0jthxr5
Imei no: [protected]
Invoice no. 17-d-2737
Date:[protected]
This handset, after using till today[protected] got 'off'after getting charged.
I want the phone to be replaced with new one.
Really got upset due to early failure. My son who was using the phone was deeply felt bad about this.
Kindly make arrangements to replace the handset at the earliest.
Rajeev r v