no internal communication

I have had so many issues with standard bank and eventually i get to the escalations department but now not even they can assist my husband has paid off this account i have a letter of closure and yet i am still receiving threatening mails and calls from standard bank telling me that i am been handed over yet my account is settled and somehow their system has reopened a closed account now the customer needs to suffer because of *********** staff.i have made enough calls and have sent more than 5 emails regarding the same issue of this closed account i expect standard bank to close this account and update their records also i require an apology for this pathetic service