Telkom Extra Charge for Unpaid Debit Order

I went to Telkom Meadowdale on the 1st August 2025 to submit my new banking details by handing in my 3 months bank statement and Id The coloured lady and the black lady assisted me I didn't get their names but can identify them The black lady took my documents and Id to update my banking details to allow my debit order for Fibre to go off my new account. The coloured lady assisted her and assured me the debit will go off. The end of August the debit did not go off . I had to get a statement from Telkom Carlton Center to go pay with easy pay and the consultant at Telkom Carlton Center told me the banking details was never changed to my new account On the 7 Septemeber 2025 I went to Telkom New Town to submit my banking details and was assit by Vanny who advised me that I will be charged and extra R200 by Telkom the end of September for the unpaid debit order that went off from an account I closed. I don't see how I am charged when the ladies and Telkom Meadowdale did not do their job I want this extra charges reversed. This was not my mistake and I refuse to pay the extra R200