BSNL Online Bill Payment Successful but not Updated in CDR billing account and disconnected, What to do?

When we know the successful online bill payment of BSNL is not updated in CDR billing account, how to rectify the error in online or offline, where we have to send/submit the paid bill receipt...

source https://bsnlteleservices.com/bsnl-online-bill-payment-not-updated-cdr-billing-account/