Dermot
<font face="Verdana, Arial, Helvetica, sans-serif" size="2">2 ADDITIONAL FLT SEGMENTS WITHIN EACH
CONTINENT - EXCEPT CONTINENT OF ORIGIN-
MAY BE PURCHASED AT A CHARGE PER
SEGMEMT OF:
FIRST - USD550/AUD750/GBP350/HKD4300/EUR450.
BUSINESS - USD400/AUD500/GBP200/HKD3200/EUR300.
ECONOMY - USD150/AUD200/GBP75/HKD1200/EUR100.
CONVERT THE USD AMT AT THE BSR IF
CURRENCY OF COUNTRY OF ORIGIN NOT SHOWN
EXCEPTION - FOR TRAVEL ORIGINATING IN
NEW ZEALAND, CONVERT THE AUD AMOUNT
AT THE BSR</font>
From my reading of this you will be charged in ZAR (if bought in SA) converted from USD. Also, you can only add a maximum of two additioanl segments. The rules would not allow you to reissue it X number of times and each time add two more segments.
For the RTW I sent to you I was short of two segments: LGW-EDI and EDI-LHR but at a cost of USD300 for two, I was much cheaper buying a seperate ticket.