Double charge for tickets / poor service

On 2 December I booked 4 x tickets on the NuMetro app for the new James Bond movie at the Waterfront and my credit card was debited for an amount of R160.00. When I arrived at NuMetro that evening to collect my tickets the electronic ticket collecting system was down. The place was in total chaos. I explained to the NuMetro staff that I had already bought and paid for my tickets via the NuMetro app, their systems were not working that evening so they had no way of verifying my purchase. I had to then purchase another 4 x tickets at a further cost of R160 and was issued with a hand written receipt. The seats I had booked on the app were unavailable. What an unpleasant experience. I then contacted NuMetro via their website a few days later to notify them of the double payment. As yet I have had no feedback from NuMetro. What absolute shoddy service. This is not the first time I have experienced poor service at NuMetro and their staff just don't seem to be trained properly. Their electronic ticketing systems are never working properly either.