Several phone calls, no messages left

We got a call from this number today at 12:33 pm and didn't answer. No voicemail message was left. This is apparently a new number for the same caller. When I called back (our number is hidden by default on outgoing calls) I heard a recording that was identical to at least one which I've heard when I've called back different numbers. This time I took advantage of the option to have our number placed on their do not call list. This may nor may not work. Nevertheless, since we live in Massachusetts and don't know anyone who lives in Ohio, the entire area code will be added to our call blocker. I highly recommend such a device to avoid these nuisances.

We got a call again from this number today with the same caller ID, WAYNESBURG OH. This time it was blocked by our call blocker. Please see my previous post of 18 Nov 2015.