Well KB14 I can give you some hints why, because SOME South Africans with an attitude like you are not liked by potential employers. Besides, what about all the South Africans flying outside of Africa? Guess you are not trying to find a job outside Africa?
I'm an European as you may notice. I have JAA and FAA licenses and even had a South African validation license on which I was flying ZS aircraft.
The pilot market is an international one and if you don't like this, well then that's your problem.
Cheers