iSewula

I have a 2012 coin from iSewula Afrika. Is there such a place, and is this a real coin?

I guess you're talking about this coin: https://en.numista.com/catalogue/pieces44775.html

It's a real coin, from South Africa. iSuwela Afrika is not a place, it just means "South Africa" in one of the languages spoken in South Africa, in this case Ndebele.
Since 2000 South Africa uses a different language on the coins every year.