Agreed. I violates basic VAT rule that VAT vendor is reponsible for VAT collection.
SARF=South African Revenue Force
Since SARS will not be able to force foreign companies to register as VAT Vendors, they'll probably just collect the VAT straight from the payer... It's like when they charge you VAT when you collect your foreign-sourced parcel from the post office, or when you bring something in through the airport and the friendly customs agent waves you over for a chat and a body-cavity search.