I think you will need a bottomless pocket to use this router.
First of all, it doesnt work with Africom because Africom use cdma network, this router is 3g/4g lte which means its hspa+.
Although it does mention evdo usb modems, this type of evdo l dont think its the one for cdma which africom and powertel provide.
Now, your only left option is to go and buy usb dongles from any of our 3 isp, namely econet, netone or telecel. Then thus where your bottomless pocket is needed.