B. E. S. T. Undertaking — Electricity bill come much more than usage

Address:

Dharavi kumbharwada, 4th wadi, suthar chawl mumbai :- 400017

My consumer number is :[protected]*1
Name:- manubhai b jethva
In my house we use only 3 tube lights, 3 fans, 1 t. V and 1 fredge then too electricity bill come 3k to 3.5k per months how it can be possible. Please do something for this as soon as possible.