Excess Monthly Bill Raise.

Respected Sir,
My basic complain is monthly electricity consumed is very high and cesc send monthly bill without any schedule check last month bill paid 2100/- by debit card dt-28/05/2018 and current month bill received from cesc-2417.06/-
sir i sure that after checking of my meter my bill is convert 700/- to 800/-.
so i request you to pls. take necessary action regarding this.