I don't know where in South Africa you're from, but I saw there was a rattery in Pretoria called Pied Piper's Rattery, though I don't know if they're still active. Contact information is
rodent@mweb.co.za.
In addition the Ratster showed Moonstones Rattery in SA but didn't say where, but the breeder in on the forum below as Moonstones.
Check out the
Ratanooga South African Rat Club forum I found while browsing; it might help you!
Edit: Oooh! I knew I'd heard the name Moonstones before! I went to Rats Ahoy! and found
this thread which gives the website for
Moonstones Rattery in Pretoria. I know they're currently active too since they just imported a bunch of US rats for their program.