Uttar Pradesh Power Corporation [UPPCL] — Wrong electricity bill a/c no [protected]

Plot No. 420/B-44 spring Garden, Uttardhauna, lucknow had taken temporary connection for construction of my house on 14 Aug 2021. The connection was taken through online portal. After that I have paid all the bills generated online.Account No is [protected]
However, when my connection was changed to permanent, the electricity bill due is showing Rs. 75937.
Since I have paid all the demanded bill timely then why am I being charged so heavily.
I have complain regarding this to S.D.O Chinhat division on 07.01.2023, but no response or reversal of bill has been done. They are saying that the amount is arrear. But i want to state that if the demanded bill on monthly basis is being paid on time by me, then why should I be charged the wrong amount in the name of arrear. I have not been informed about any such clause either through online portal or SMS.
I have approached 4-5 times in person to chinhat division and exchange, but in vain. This is leading to mental tension.
I have also visited Exchange, Gomti nagar extension, but no needful has been done yet.
i HAVE MAIL TO ALL HIGHER AUTHORITIES BUT MAIL BOUNCED.