FLIGHT CHANGE

I booked tickets last year and could not use them due to COVID 19. I changed them to different passengers ( my parents) . The circumstances for my parents and were not able to on travel the new date and when trying to change dates I was informed that I have to pay flight change fee of which I did not have a problem. I wanted to change the tickets to different passengers and pay flight change fee and was informed it is not possible. I am about to lose R 1800.00 now because of this policy. I thought flight change fee will allow me to change my flights anyhow. I am also not happy with a turnaround time for Travel Bank which is 6 weeks because if you do not redeem your flight tickets through that channel you do not get change even if you book cheaper flights than original tickets. I believe this is done deliberately for customers like me to forfeit their tickets and benefit kulula