Calcutta Electric Supply Corporation [CESC] — High end bill raised in july 2020 bill

I am a Domestic Customer of CESC containing Consumer No: [protected] & Customer ID: [protected], address- 94/A SURYA SEN NAGAR, KOLKATA 700 074, LP.166/9/1. However, I have received a bill amount of Rs. 3840/- for 15th JULY, 2020 billing cycle to be paid within 03.08.2020.
It’s really very shocking because during the summer months I have paid a highest bill amount was between Rs. 600/- to 1300/- in recent years but now during this hardest time Covid 19 where the financial status and economic status of my family really shaken you have sent such abnormal bill amount. I am sure that the meter reading they are showing is definitely manipulated.
You are hereby requested to help me in this matter and in solving such unprecedented billing as I am unable to pay such amount during this hard time.

PUSPA DAS