Ditto... they call about once per day and never leave a message. As far as I know, I do not have any outstanding debts that anyone would be trying to collect on.
My caller ID shows a name of John Huppenthal. The phone number (prefix) is an east valley (Chandler/Tempe, etc.) exchange. Searching the web, I found it belonged to John or his organization! He is the State Senate Education Chairman. http://www.johnhuppenthal.com/