vodacom incorrect billing procedure

good day<br> <br> my Vodacom account was debited twice on December 2015, Vodacom then refunded the money back in the new year into my current account, but no fund could be available because my account was on -R2000. Now the debit orders came back because no fund were in the account, because I have lost my job. that is why my husband paid the account from his bank via eft.<br> <br> I received a phone call to state my account is in arrears, when phoned to asked how my account is in arrears, they state that Vodacom refunded the money back to my current account where the debit orders returned. now how does a supplier refund money if was unsuccessful from that account???<br> <br> now Vodacom want to keep me responsible for their own mistake, were vodacom refunded money where no debit order took place. this is Vodacom's own fault and incompetence. Get your billing and accounts department up to date, and not double debit or refund money if no payment was received.<br> <br> Vodacom must sort this out, I will not take responsibility for their own mistake.