FNB Loan repayment : Discount fluctuations and poor service

Pathetic. In Feb 2023 I asked for the settlement amount on my account. The lady then gave me the total to pay into the FNB account and stated that I received a 30% discount. Only to discover later on that the amount she gave me was the discount and not the outstanding value.

The money was refunded. This month I phoned again to confirm the settlement amount, I was told that I only qualify for 20% now. I don't know how this is even possible. I would like to clear the account ASAP and have been to an FNB branch since I am not getting any feedback from Brooks and Luyt. The branch told me that Legal will contact me within 24hours, that also did not happen. Yesterday I paid the full account value with 30% discount as per agreement in Feb (if Brooks and Luyt had communicated properly this account could have been cleared).

Now I have to pay over R 7000 extra because some clerk messed up. Am I now paying more because the percentage changes as SA economic situation (and repayment of loans) changes every month. I am willing to pay the account, but I have to jump through hoops to get into contact with the right people. The service from Brooks and Luyt is pathetic not even DebtIn was this useless.