CESC (Calcutta Electric Supply Corporation) — Unexpected Electricity Bill

Address:

Kolkata, West Bengal

We have CESC Electricity supply at our home. But the last month electricity bill information received by me from CESC through sms is just unexpected. My Consumer No: [protected] and Customer ID: [protected]. It is showing that this moth's bill is Rs.810. But it is impossible. Please, give me solution.