Calcutta Electric Supply Corporation [CESC] — Excessive bill amount sent

I satyabrata Mitra residing at B/1/H/21 Rakhal Ghosh Lane Kolkata 700085, would like to inform that electric bill sent to me for June 2020 consumption was too much excessive as the bill amount is Rs more than 2000 but till before this the last bill paid only Rs 650 for previous month, that is, for the month of May 2020.Therefore I request you to look into the matter as early as possible as I can not afford to pay it on time .