Stranded at the airport

After booking and paying for a car on line I arrived to collect a car and was turned down because they did not want to accept my Capitec card. I find it funny that they took my payment from that account and then all of a sudden my card is not good enough. The problem is I am still waiting for my refund. Have heard nothing about getting my money back. Is this the new way of making profit. Thanks to Eurocar my weekend was saved.