Upper Peninsula Security is the caller.  Marketing, I would assume.  The guy started into his speech with "we're expanding into your area...".  I cut him off with an explanation that we're on the National Do Not Call Registry, which he said he was unaware of.  Told him not to call again, and to remove our number from their list.  Finished off with, this is warning #1.  Darned if they didn't call again 3 hours later!  Told the guy (different than first caller) that this is warning #2, and that a 3rd call will result in legal action.