Debit order

I really regret using Nedbank's services. I am constantly calling them to change my debit order date back to the 25th but regardless of how many times I call it is not done. If the do nkt debit my account twice 2 days in a row, they are debiting me 10 days early. I have to constantly call my bank to have my debit order reversed because of all these unplanned and unagreed debits by Nedbanks.

Someone please advise how to block a debit order. I will make direct deposits for Nedbank going forward.

Speaking to their call center agents makes no difference as they a extremely rude and do no listen to what client's say.