Bad service at Wesbank

I am unhappy with service from Wesbank as I have enquiring id I must place notice for settlement. However I was told that settlement letter will be paid and must be paid within 5 days however I have settled the amount stated on the letter on 04 July 2023. I was told that I must call Wesbank to cancel the debit order on 06 July 2023. The call was made to Wesbank and I was informed that my account balance is 0.00. However when checking on FNB there is balance of R4574. I am really sad as I have settled the amount which was stated on settlement letter