It depends on how much you want to spend and you did not specify what type of rifle you want? A classic rifle? Or a compact like a bullpup?
I would opt for the AirArms S410 TDR which is reasonably priced and superbly accurate and the rifle comes in a neat case. Ideal for your purposes. A magazine capacity of 10 pellets is more than enough for hunting and plinking purposes. And AirArms supports its customers - at least in South Africa.
But as you stated that you want to use the gun for hunting, I wouldn´t consider a .177 in the first place. These are limited in energy by their comparatively light pellets. For hunting, I would at least go with the .22. If you want a compromise, you might look at the Weihrauch HW100S in .20 caliber but the choice of pellets is very limited in this caliber.
So if you ask me: look for a good .22 - more energy and much more smackin´ power. The trajectory will be just as flat as with a .177 and the pellets are almost as cheap as the .177s.
Another reasonably priced, accurate and powerful gun would be the Sumatra 2500 in .22 but I doubt that there would be any kind of support for Africa.
If you have enough money and are willing to spend it, I would choose the FX Impact because it can easily be finetuned in any imagineable way and it has interchangeable barrels in .177, .22, .25 and I believe even .30 cal. If you get all those barrels or, for example, just a .177 and .22, you basically have four (or two) different airgun calibers all in one gun and it is just a matter of adjusting the gun correctly to your chosen caliber. And FX has customer service almost all over Africa, as far as I know.