Unhappy with FNB

Why is it such a mission to close an FNB Revolving Loan?

I settled an amount of R16 062.03 with FNB, and my account was debited with an amount of R299.43 on Sunday, 31 July 2021. I called to seek clarification and they told me that it is a service fee. On Monday, 2 August 2021 I called again and one of the consultants told me that I need to pay an amount of R230.53 then my account would be closed. On Wednesday, 3 August 2021 I followed up. A Consultant told me that for the account to be closed I need to pay R69. I obliged and paid the amount while I was on the call with them.

To date my revolving loan is still active.