I got the same call but it was a woman. I let her know that we are all aware of their scam and they should really stop annoying people. She said okay. Do these people really not know about message boards like this?
received a call saying she was from the government - spoke very poor English, lots of background noise. When I asked what she wanted - she said nothing. i didn't even get a chance to ask her how she got my unlisted number ... she hung up.