There are a handful of network consulting companies and solution providers in South Africa that have gained experience deploying and supporting eduroam at local institutions. The ones we are aware of are:
Note: the above is not an endorsement of these providers; we cannot make a recommendation. You're strongly encouraged to ask for references and to get the opinions of your peers before signing anything.
Likewise, if you're a provider not listed above, get one of your happy customers to make us aware of your services and we'll add you :-).