hi diamond club. thanks for clarifying, thats great.

One small question however, albeit a very confusing one. SAA are offeeing these special fares via there call centre only, and are bookable in G class:

http://ww1.flysaa.com/specials/en/uk_specials.html

However when I spoke to SAA they categorically said that these fares accrued no Voyager miles despite their own Voyager frequent flier programme also mirroring the diamond club, in that G class accrues 50% frequent flier miles. Is this also therefore true for the other Star Alliance partner airlines that their maybe such special offer fares, which despite being in an accruable boooking class, earn no mileage at all, because it is an 'offer' fare?
Also if a fare such as this earns no miles in the parent airlines programme, i.e. Voyager, does this also mean it would accrue no Diamond Club miles?

I know Voyager is not diamond club, but its an interesting question anyway, as it looks as though SAA are bending the star alliance rules slightly! I have not seen the answer to a similar scenario on flyertalk like this before, so it would be useful to find out what people think or what their past experiences are on this or similar situations with other airlines!?

Thanks