Non-Refundable Airline Tickets From Kulula.com

My partner recently bought me a Kulula.com ticket but we were required to change the ticket which we attempted 8 days before the flight . I was surprised to find out that we had to call in to make this change and couldn't do it online. On top of this I subsequently found out, with the assistance of the call center agent, that it worked out cheaper to book a new flight entirely (Discovery Vitality discount does not apply to changing tickets) rather than to change the ticket (unbelievable). To make it worse, the ticket is non refundable, which from the perspective of Kulula means I don't get my money back. What's really confusing is that this is in direct conflict with the Consumer Protection Act (No. 68 of 2008) which stipulates the requirement of a reasonable refund. The experience with Kulula has left us with a bad customer experience. I suggest finding an alternative carriage for domestic flights in RSA.