double deduction on debit orders

I cannot believe the uncaring and monumental error that Vodacom has caused. All clients who have debit orders on the last day of the month have experienced a double deduction off their bank accounts. Chatting with an agent, they advised the issue has been addressed and banks have been sent notifications to reverse the 2nd deduction. It would have been proactive and such good customer service if Vodacom has notified their impacted customers as soon as the error was found yesterday, 31st Dec already!