I got a call from an unrecognized number.  No message was left.  As usual, I did not answer, and I looked up the number here.  (800Notes is my go-to.)  The first time they called I thought they might have been a 'fat fingered' call (giving them the benefit of the doubt).  Then they called again the next day.  No message left.  So a 'Caution Flag' is up.  I will now be adding this number to my "Telemarketer" contact, which has a silent ringtone and is blocked.  (I won't be bothered by this number again.)  An Unrecognized Number + No Message = Scamarketer.

"Honest Business men don't conceal their place of business." - Arthur Conan Doyle, The Adventure of the Three Gables

Received a call from this number earlier in the day.  Dead air.  Just received another call.  Man on the other end asked how my "Kia Rio" is running and if there was anything it needed maintenance on".  I said "I don't have a Kia Rio.  He said "what are you driving now?"  I hung up.  Obvious Telemarketer.  The number they have is my work number.  I don't have time for these idiots and I'm sick of it!