Caller ID states this number is from "Medical Help". And it is a cellular number from Monticello, Fl. If you know anything about Florida, you will know that Monticello is not exactly a center of commerce...But low lifes and thieves abound...
This is probably a call from outside the country. They have programs that use "fake" numbers that indicate they are calling from inside the U.S. I still get calls on my cell phone from a Canadian drug company who's marketing is based in India. Have for many years. ( no kidding ) They switch numbers every couple of weeks ( all U.S. numbers) and keep calling. I am on do not call list but this law does not apply to callers outside U.S. They cannot be fined under U.S. laws. So there is no deterrent for them to stop. I have over a hundred numbers in my spam list on my phone which is set to "silent ring" so at least I don't know when they are calling. Try setting that up on your cell phones, doesn't cure the problem be helps with your sanity.
Yet another "this is an important message about your Google listing." I have to answer Out of Area calls as for some reason, some our customers come in that way.