Nedbank - Bad Service - Don't you know your own processes?

About 2 weeks ago, I advised Nedbank that my personal loan would be settled shortly. I asked if the debit order would be going off early (15th) or if it would run on the due date. The person I spoke to advised that they don't run early debit orders and that it will go off on the due date. Come the 15th Dec 2021, the Nedbank debit order goes off ... on the same day that the full settlement amount was paid in. Now I have to listen to their story about how account closures take 3 days and their SLA etc. I wouldn't have had to have this issue in the first place if Nedbank doesn't even know if it's running early debit orders or not. It's a week since the unnecessary debit order went off and I want my debit order credited back to the account that was debited. It's pathetic.