FNB personal loans-settlement amount on internet banking "incorrect"

Wednesday, 27th February 2019 I logged onto internet banking to obtain a settlement amount for a loan. Internet banking, the tool that customers are provided with to make their banking simple easier provided me with the following: Settlement amount: R ******.

I than paid the settlement amount, which the service provided me. To my surprise an additional amount was deducted on my account the following day. I called FNB Loans, as usual the call center has a high call volume. Trying to get through an fnb agent to explained the situation is impossible. Eventually I went to two of the branches and I was told that I have to go through the call centre and still no joy because I have to wait on the line for hours. How is this possible, if the service provided by FNB to make clients' lives easier, provides me with a settlement amount? It's been over a week and the issue has not been resolved. Getting through to an agent at the call centre is near-impossible, having tried every day since. And to listen to the the voice recording is annoying because I get a voice saying from 1 to 10 rate your call which there was no agent that spoke to me. All in all, really disappointing service.