Incorrect charge and refund process!

After upgrading my Vodacom contract I received an additional incorrect charge for the devices (Phone,Dex station etc) that I selected. After contacting Vodacom and requesting a refund for the incorrect charge, I was told that it could take between 7 and 14 days. A Vodacom consultant eventually contacted me and informed me that the refund has been completed but instead of refunding me the amount has been credited to my Vodacom account and that I would need to complete an additional request to have it paid into my bank account which would take another 7 to 14 days.

Basically I'm out of pocket due to an incorrect Vodacom charge which can take up to a month to refund my money.Unacceptable......