Finally got to talk to somebody when they called.  It was from our local newspaper; we had recently renewed our subscription.  They were calling to verify that we were receiving the paper as requested.  They asked some more questions about whether I was a new customer / old customer, and asked if I wanted to take care of payment (which was odd, considering I had already paid at the time that I renewed).

I guess this is a "clearning house" for various publications.