I'm sure you already know but just in case someone wanders along that doesn't Zimbabwe no longer has a currency. They use U.S. Dollars of South African Rands. Mugabe actually got away with paying off a large portion of their foreign debt with newly printed money until the IMF / World Bank figured out what was going on.
Well, the money exchange site that I use still has a conversion to Zimbabwe dollars. I can’t think why they would, if what you say is true. (I don’t doubt the part about Mugabe. I wouldn’t put anything past that thieving murderer.)