Called cellphone. Left no message.

They have called several times.  I do not answer call from unknown persons or from numbers I do not recognize...This was both.
They don't leave a message.  Therefore, I figure it's not that important or, most likely, a scam!  I am so tired of all these scam calls.  I get at least a few each day.  Yes, I'very registered with the National DNC, for whatever good that has done -- Absolutely Nada!

Just called my cell phone a few moments ago. I did not answer. Possible scam.