Xiaomi India — Touch panel issue

Address:

New Delhi, Delhi

Sir,
My name is rahul malhotra bought xiaomi mi4i on 18 august 2015, few days back my touch panel was stopped & its touch panel cracked while it was on charging & i told xiaomi service center located in janakpuri in new delhi that it wasnt my fault but they dint listened me & despite my phone is in warranty they are asking 4500 rs for toch panel removal & repairing sensor which stopped working by itself.. Please me