Newest scam for Harare immigration is to try and charge 50 dollars US for a visa instead of 30. We asked the woman three times and she said 50 each. When my wife asked rather loudly isn't it 30 each the woman said yes thirty each.
Someone needs to get her name and report it right there at the airport. Quick way to get it to stop. Sunlight of exposure does amazing things for those lurking in the darkness.