Vodacom rediculous penalty fees

I have been a longstanding Vodacom customer with multiple numbers. While moving bank I paid the account via the app, even before the debit date - only to see that Vodacom still charged R100.88 for a failed debit order.

I'll complain about the bank in question separately but that is **************** . I understand if they weren't paid but they were . Also if you could get through the phone systems loops to speak to someone it would help.