Brihanmumbai Electricity Supply & Transport Undertaking [Best] — very high electricity bill

Address:

Mumbai City, Maharashtra, 400013

I have only one fan and a fridge in the house and my electricity bill has come upto 6000 rupees for the month of april.
I was not in mumbai most of the time. It is unreasonable. My maximum bill till date is 3000 and the average bill is 1200/1500. I don't understand this upstream. I think my meter needs to be checked, or someone is stealing electricity from my meter.