Please Attend to my email, This Account is Paid!!!!!?

Ref, *** I had an account years ago with Std Bank, which was paid up and closed. I am being harassed by this company, yet I provided them with emailed proof that I received from Std Bank. I have emailed Percy. M with the proof, yet every single day I am being called and harassed. They sent me now a message to say I made a payment arrangement which I never did, since the account is closed. Please rectify your records and call me back, the reference number is above and you do have my details Absolutely disgusted by the level of ignorance!!!!