Voadacom must catch a wake up!

How the hell does Vodacom work? I made a payment ladt week on my outstanding debit order from the previous month and now Vodacom goes and still deducts it in this months debit order?! Does anyone in the accounts department talk to each other?! Now I have other debit orders that didn't go off because miney set aside for it is in Vodacom's account! I want my refund and I want it in no later than 48 hours!