Tracking down call SPAM
Finally had a chance to catch the phone and figured out that 785-799-3567 was a call from what sounded like "Redmond Media Group" (though some Internet posts show it as "Red Media Group" -- hard to make out exactly what their name was.)
Why are they calling several times a day? Turns out this firm has been repeatedly calling to offer... a "Redhat Enterprise Whitepaper."
Wow.
The cheerful pitch when I asked them to drop me from their call list was, "Even if you get one or two pieces of information from it, it's worth our time to send it to you for free!"
No, thanks.
Let's see if they really do remove me from their list.