Frustrated, account not updated

I’m extremely angry and frustrated In June I wrote a review over Ackerman’s customer service. I was given a discount because I told them I wanted to pay off the account and have it closed since I was getting retrenched ,of which I did .but now 2 months later they keep on calling telling me my account is in areas of R922 but they even fail to explain as to how was this accumulated if the account was supposed to be closed.