have you looked on ebay?
one of the main reason's for most place's not shipping to africa is i am afraid to say but the country is unstable in places.
the risk of the mail going missing is far to great and this increases the insurance risk to the sender.
also i causes problems for the buyer as the have to wait for so long for shipment to arrive.
i would say that if you emailed yokomo and told them your problem they would be more than happy to help.