Calcutta Electric Supply Corporation [CESC] — excessive bill for rs 6500

I, Tanmaya Ghosh of 10/2 Motilal Gupta Road, Barisha, Kolkata having Consumer ID- [protected] is facing an unexpected bill of Rs 6500 which according to me should not be my bill amount under any circumstances. If you look at my previous bills, this bill amount it is highly unexpected and the reason is completely unknown to me though I have already paid by internet banking and reference number is SBI[protected] on 03/07/2018.

Kindly look into the matter and help me out regarding this issue at the earliest.

Thanking you in advance

Regards
Tanmaya Ghosh
MOB [protected]