I need my paid up letter

You have been harassing me to pay the DMC (Capfin account) calling me non stop and now that the account is paid and settled I have to struggle to get through to your contact centre and to get the assistance I need I called the *** multiple times and finally when I get through the consultation could not assist because she does not see the payment I made she didn’t even bother checking or confirming if the email I sent with an attachment of my proof of payment was received, Instead she said I must call on the 25th on Christmas Day really??? ..

Can someone help I need my paid up letter and my bureau details updated accordingly.

Your Ref: ***6 Customer number: MOK75554