I keep getting calls from some foreign number.  i think from Nigeria.  they always ask for some name that I can't understand.  I have told them over and over that person is not here.  I tell them they have the wrong number.  They say they don't.  I have screamed at them.  I have asked them nicely.  They call at 2:00 a.m., they call at 7 a.m.       I am at my wits end