NO stock and NO refund

Purchased a Pair of Yamaha Speakers online on 30 November 2019 and paid immediately online using Payfast. No problem there. Order was processed and confirmation received. A whole month later, and no delivery. Emailed the company only to be told that they had no stock and were expecting stock early January 2020. By 24th of January, still no stock...so 'Ive requested a refund. To date, Im still being given the run around in trying to get my money back. Called in to Robyn who was very pleasant and said it was a Payfast issue. However, its now 3 weeks since I've requested for my refund. I have been emailing them every week, and now they have even stopped responding to me. Very disappointing service.