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.
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.