Punjab State Power Corporation [PSPCL] — although I paid my last bills still aug sept 2018 bill is added up with same amount

Address: Mohali, Punjab

Please note that my pspcl account no is Z74ZT695582Y.
I have paid my 2500rs bill on 12 sept 2018.which is been again added up in the bill received in oct 2018.kindly do needfull.
Please find attached screenshot of presents showing bill and the last bill which was being paid on 12 sept 2018.
Looking forward towards your positive response.

Regards,
Ajay babbar
[protected]