Paschimanchal Vidyut Vitran Nigam [Pvvnl] — Bill Dispute related issue - Account Number[protected]

Address:

E3-301, Delight, Uttamtown scape, Opp Serene Hospital, Pratik Nagar

Hello Sir,
I would like to get your support for the bill generation which happens for 2 Months on 6th of Dec.
Till now we have already paid the bill before the due date which has a rebate of 69Rs per month. But I can see the Nov and Dec bill was generated on 6th Dec which comes around 2720 Rs and does not have any rebate considered. (1360*2). Also if we have timely payment then it should be (1296*2)
Also please find the last bill payment done till now.
31st Aug to 30th Sep - Paid 1296 on 18th Oct 2021
30th Sep to 31st Oct - Amount to be paid before 11th Dec 2021 (~1296)
31st Oct to 31st Dec - Bill generated on 6th Dec but no rebate considered and late bill amount of 69 Rs added so far which is not correct procedure if bill was never been late as per the printed due dates.
Please let us know how quickly this can be addressed as the same has to be closed before the December due date to avoid any further penalty.