Lava Mobiles — Regarding model fuel f1 display broken

Address:	Lucknow, Uttar Pradesh, 226023
Website:	www.lavamobile.com

I would like to inform you that, i had purchased my cell phone LAVA Fuel f1, on feb 2016. it display suddenly glass has been broken automatically when cell phone was charging. company discribe that the glass is Asahi Dragontrail Glass and add shows its not breakable so why its broken. my friend also have same model phone and blast automatically when mobile was charging.
so, plz what should i do tell me, i went to service center and submit cell phone after few days service center call me and told the glass is change for charge basis. tell me why i should pay.