Acc Debited twice due to system error fees charged

The debit orders were debited twice in December January 2015. As per a system error from Vodacom and i received an sms stating so. I have two bank accounts. I let my debit orders go off on the one. Therefore i only add enough funds in the account for it to go off. When the Jan/ Dec debit order went of twice. Obviously one failed as there was not sufficient funds. When my January/Feb debit order went off, i was charged R100 extra and therefor the debit order failed again. I contacted customer services and explained that the debit order failed as R100 was added to my account for a fault which was Vodacom's in December. As the number in question is a data number. They never got back to me i had to follow up. Eventually after no contact. I received a R100 credit note in my account. I asked again, i want the debit or der for the normal amount to re run. which then happened on the 8th of Feb. Now i received my new statement. I saw the amount billed was double, and again another R100 was added for the failed January debit order. I want to know what amount is being debited this month and that all penalties were removed. no space left i have a lot of reference numbers but no feedback