You're talking very much about a two tier country.. You have on one hand the people who have actually managed to get an education and on the other side the rest..
The "rest" believe in old style cultural methods and unfortunately this is one of them..
When we lived there the live-in house girl would put her bed up on bricks so the evil spirits wouldn't take over her body as she slept...
There are so many other stories I could tell you of what they believe and also the way that the past and current goverments lie to them (for example before the elections in the early nineties a freind who was selling his house was accosted by his gardener as to why he was selling "his" (as in the gardeners) house? It transpired that one of the political parties was going round telling the people in the townships that by voting for them that they would make it legal for them to take possesion of thier employees assets and properties... That party won and unlike the Zimbabwee land grabs nothing ever happened (the goverment isn't that stupid!!!)
That country seriously needs an education system that works and in 20-30 years time that country could be great and probably free from a lot of crime that happens today purely due to cultural issues
