Apple India — Iphone 4s battery Swelling

Address: 411057

Website: www.apple.com/in/iphone

Sir,

I have apple iphone 4s 8gb
i bought it in jun 2014

on 18th aug 2016 all was fine i went home and phone was in my flat in pune
and when i came back on 21st i saw The case is separating along one side about 3mm so far,
then i think to contact with the i phone care
but by the very next day the back case completely broken and battery was looks like blast.

even i didnt charge the phone from 18th then it happen.

this may cause to my health if the phone was in my hand
the apple site shows it is out of warranty so we cant help you but it may cause to my health.
kindly provide me appropriate solution regarding the same