cancelling a flight booked from ABSA app

Booked a flight through ABSA app Instead of my usual bookingdirectly througn the FLYSAFAIR app from Jhb to Durban for just over R500 which was fair considering R600 online on app. But never again. After booking I received an email indicating booking from Lanseria and not OR Tambo, but i see i would pay a penalty but certain low cost airlines you cannot cancel, imagine my shock but im like no let me call them, this is a few minutes ago im sure something can be done. Call ABSA call centre few minutes later and i am told no i cannot cancel but i will be assisted to make a change at an additional R800. Im like so why dont i just forfeit that ticket and buy from the airline app at R600 and im told its up to you, so cavelier, wow ABSA. Went into airline app and lost R300. So a R600 ticket i should have paid for cost me nearly R1000 so ****ed off