No refund for a double-charge on my card.

On 24/01 I watched a movie at Ster-Kinekor Brooklyn. When paying for refreshments, I entered my pin, and the transaction went through. The lady assisting me insisted that the transaction had failed because no receipt was printed. I indicated that the lack of a receipt did not mean that the transaction had failed. Unfortunately I don't get mobile notifications for payments less than R100.<br> The cashier called her supervisor who told me to watch my movie, and that when I received an SMS notifying me that the payment had been reversed, I could come and pay.<br> I did not receive an SMS indicating as such, but decided to pay in any case so that the cashier would cash-up correctly at the end of the night, trusting that if Ster-Kinekor said the payment had not gone through that it had, in actual fact, not gone through. When I paid for the 2nd time, I was reassured that if I did get double-charged, the refund would be a quick and easy process. I checked my bank statement a few days later and noticed that I had indeed been charged twice. I contacted Ster-Kinekor and got an immediate response, but after 9 mails and me sending a screenshot of my bank statement to Harry, I've not been refunded.