That happens... VWSA probably only has enough parts in stock for a few days' production, and replacements need to be special-oredered (trim elements like the sunglass holder don't usually break down and need replacement). The V5 is probably assembled locally with imported parts rather than fully manufactured in South Africa, hence the absence of a local supplier for some of the parts.
I had a similar problem, had to wait a few days for my sunglass holder to come from southern Brazil (Paraná state) where the Golfs/Audi A3s are made. The part was made in Brasil though.
About my other accessories, I ordered a luggage net from Martyn only to find out that they`re sold through the Audi network. I got it cheaper from VAGparts though, as the luggage nets are imported from Germany - so buying in the UK means I'm getting it tax-free!
Cheers,