Charges on a paid up account

My debit order was cancelled and after so many struggles of trying to reinstate it, turns out no one in your company can do it not even the West gate store could help, because of this my account was outstanding. Made payment of R5215.27 on the 12.06.23 as per my statement and called the call centre to notify them of payment, a lady said she would get the team to call me and assist as I also request a paid up letter. No one has called me instead I'm getting emails telling me that I need to pay charges which were added days after I settled my account. I contacted the customer service on email and they also not interested to assist, they keep telling me to call the call centre after I had advised that I have never received help from calling the call centre, seems like everybody there that I have spoken to does not know what they are doing. Please can I get the matter sorted out urgently. I can't get listed again because of someone else incompetence.