DebtBusters SA

I have been under debt review with Debt Busters and their service is terrible. They helped my like in 2 seconds to get registered and took my money every month. I had some cash and paid all my accounts in full through them except for 1 account. When I tried to get of debt review they were like 10 people giving me different stories. Now a year later I found out that one of the accounts that I paid in full is reflecting on my credit profile as not paid in full. They said I will get letters stating that the accounts I have paid in full are paid, but I'm still waiting for it. I'm paying the account that was not settled every month on my own. I do not have any other accounts, except for my monthly rental accommodation. How can I get my name off debt review?