Haven't Received Refund

During the morning of Tuesday the 22 August 2017, I attempted to purchase a month pass from the machine facilities. To my surprise my Gautrain Gold Card was not being read by the machine. I proceeded to the teller to purchase the month pass. I mentioned my card wasn't being read my the machine facility. He managed to load the pass on my gold card.

When I attempted to go through the gates the card reader couldn't read my card. I returned to the teller who informed me that the card was dead and he couldn't transfer the month pass to another card, so he handed me refund forms to fill out and I had to purchase a new card. After handing in the forms he said the refund would be deposited into my bank account.

It's been a week now, the Gautrain has not contacted me in any way, I have not received my refund (which is a large sum of money) I've had to load Pay As You Go each day I go now, on my card and it's getting costly.

I would like my refund!