Called two minutes after San Antonio, TX called me, so they are probably connected.

This also happened to me two weeks ago where the same three numbers would call me two minutes apart (then wait a couple of hours to start again) for two straight days. It was obvious they were the same person trying to trick me into answering the phone. I never answered any of them even though one of the numbers was from my home state and in an area only 20 miles from me.

Same here.  Guess they're just the stubborn form of stupid.  None of 'em are too bright anyhow.......................

Left a prerecorded message about signing up for health insurance.

Just called and didn't say a single word.