In South Africa, all media sold in the country needs to be certified by the local ratings board called the FPB (Film & Publication Board). Unfortunately, the FPB is slow on the uptake on digital distribution and often just demands that certain online stores/services cut all sales if they're not certified.
If you really want to go through the process of getting your game certified for sale in SA, you can contact the FPB here: http://www.fpb.org.za/profile-fpb/contact-us. Be prepared to pay though. The current rate is the equivalent of about $210 per game :/
That's why most South Africans have historically (and many still do) sign up for these services with a UK or US account.