Exide Industries — not getting backup from battery

Address:

East Singhbhum, Jharkhand, 831005

We are not getting the backup after full charging and the battery is still under warranty. We are very suffering with this reason. Also we tried to contact the customer care of exide but we are unable to reach.
We are mentioning details of battery bellow:-
Purchase date:17-06-17
Battery type:feio-it500
Serial no. A3e7z002188 3e72

Regards,
R. N. Yadav
Contact:[protected]