This question already has an answer here:
I am based in Durban, South Africa and would like to get a copy of the operating system but do not have an internet connection. Can someone nearby help me make a CD copy?
Why don't you try and get in contact with the South Africa LoCo team
or subscribe to their mailing list
They have a couple of release parties set up, I'd expect you could get a CD there
You can look up information for getting CDs from nearby enthusiast by contacting your closes Ubuntu local team: