Incorrect Balance Update from my Credit Provider

I've been under debt review since 2018. My credit provider African Bank is not updating my balances according. According to your department they are still busy with investigation to update my balance. On the 11/11/2022 an amount of R27525.92 of interest has been added to my account. On the debt review statement your balance indicates as R73713.20 and on African Bank it indicates as R91107.47. There's a difference of R17395.27 that was added to the account. How it it possible that my account at the credit provider does not get any lesser on a monthly basis, but higher? I'm not satisfied about the service I do receive from department, and each time I do get the same feedback. Our balances is only an estimate and the credit provider is the correct balance... I've heard this each and every time from your department. I need feedback on why there was interest added on my account in one day, the amount of R27525.92.