Public Protector Of Who?

Is the Public Protector only for citizens? What about naturalized citizens? What about permanent residency holders? What about the ordinary tourist, what happens if a government department seem to be xenophobic, does the Public Protector help these guys if they come forward with a complaint? Does the Public Protector know that these guys are equally taking part in our economy just like our first class citizens, and that they do have the same rights as [our] first class citizens, or does the Public Protector do passive xenophobia by just ignoring these guys' complaints?