Overcharged Debit order and still no repayment

For the month of March I was charged R640 instead of the usual R128 as a vitality member. Despite acknowledgement of the mistake more than half a month ago, I am still yet to receive the R512 that is owed to me. I have had to call into your call centre repeatedly, only to be told that while I will be charged the correct amount of R128 next month, my refund has still not been approved. How long is this going to take?? <br> I am also confused at the reason this mistake happened, as I was told my 2 year contract ended, which is the reason for the overcharge. However, I have been a loyal member for over 2 and a half years? I have been told I have been put on a one year contract again? Why? Is my contract not month to month after a certain period of time as a member? <br> I am in disbelief that no one from the call centre reports back to me about the status of the money that is owed, and rather I must waste my money phoning wondering when I will eventually be paid.<br> Peter Brown<br>