David, welcome to the forum.
I am not finding basenji clubs in either Tanzia or Zambia. I did find a strange listing with South African breeders. Perhaps if you contact the more current ones, they can advise you of local breeders.
http://www.fallohide.dk/basenjis_in_southafrica.htm
You might also contact the Basenji Club of America African Project to see if they have any contacts for your area. https://www.basenji.org/african/project.htm
Wish I could be more help.