They called and asked for someone who no longer works at my company, then asked to speak to an executive. When told that wasn't possible he stated he'd reach him on his cell phone. (yeah, right.)
Person named "martin" asked for one of my attorneys. When I pressed for details he said "it's personal". I apologized and explained it's my job to get details before transferring calls and he just kept saying, "he'll know what this is about". I asked for name of company, anything that would yield who this was to make sure it wasn't a marketing call and "martin" finally just said, fine, I'll just call him on his cell phone" and he hung up. When i called the number back to see where it went, it didn't even ring and no one picked up. HA!
He said his name was "Martin Webber", mispronounced my boss' name (not a deal killer, but a clue) and said he would be familiar with his name. I offered to take a message and he said he'd call back.