Right, I've cracked it.

A DONE6 itinerary ex-JNB and priced in South African Rand. Booked by phone through the AA ATW desk in Dallas with me generating the route first in the OW planner tool.

The AA ATW desk have given me the number of the AA General Sales Agent in Cape Town, who is Mindpearl.

Any recent experience with paying through them with a non-South African credit card?

As there are several tickets the entire deal is over ZAR 300k or over US$27,000