Actors In MTN Adverts: South Africans?

Have you been watching the world cup adverts? Every time the MTN advert is shown, I can't help wondering about the 1st set of three men shown -who after receiving a message that they have won- have no squabbles flinging themselves on the ground with the last running headlong  into a ditch and in the process spilling dirt all over himself.

A friend said the adverts were made in SA. Are these guys really South Africans?