Wrongful debit order

I took over a friend's contract and migrated it to my name. There were migration and admin charges to the amount of R6013 that was paid to Vodacom by my friend (I have the proof of payment). Vodacom then again deducted that amount from my bank account. After going in to their Menlyn store twice, they said the issue has been resolved and they will refund my money. That was in August. I phoned them again today. Had to phone twice to get someone who could help me. Now they have referred me to their legal department. It is now almost 2 months and still I am struggling with this. I just keep being referred from one person to the next. This is really unacceptable!