Still no refund after 3 weeks

I am still waiting on my refund from Discovery / Kulula for a flight I booked 5 weeks ago. The vitality discount option wasn't working on the website at the time of my booking. I complained that I had to pay full price. Kholofelo responded per email and said that they would process a refund. That was 3 weeks ago. The first time I emailed and asked why the delay since he said it would take 1 week. He said he would follow up. The last time I emailed him and said I would write another complaint. He said that I should please give him 2 days, he will speak to Kulula. I am still waiting. Will I ever receive the refund?