AIRLINK/DISCOVERY SUCKS

Bought a ticket and had to cancel for personal reasons - even bought travel insurance in case i need to cancel or change flight - cancelled flight and now requesting refund and airlink telling me i need to contact discovery for my refund as they will only be paying me R163 ? like how the heck - when did i sign up to request monies form Discovery who in turn now is asking me why i need to cancel and claims need to be approved etc etc .. like how the heck is this even right- why do I have to explain why I cant go away - i just want my damn money or a voucher like SAFAIR does - even tried to change the flight to a later date and they want to charge me R552 this is just day light *******- would neve have booked with this stupid airline if I knew it would be this much trouble to get my money out of them I'm so irritated - give me my money back airlink/discovery.