"unknown name" on the caller ID.  Early Sunday morning?!  Geeze,  take a day off you worthless scammers!  
Google  callerID4u.com to see why these calls will never stop until we come down on the phone companies and make them stop it.

Someone calls several times per day from Chattanooga, TN with phone number 423-535-9523.  We wish they would stop calling our home phone which is for our personal use.

I labeled this number as SPAM.   If I don't recognize the calling number I list them as SPAM.  

This number called my home phone at 2:45 P.M. on August 19, 2014.  It is a ROBO CALLER with the automated voice named "Shelby".  She asked if I was pro life.  To verify if it was in fact a robo call, I asked what date we celebrate Christmas.  The robo call can't  answer questions that it is not programmed to answer.

If you say the term 'robo call' they will respond  with the programmed answer of 'this is not a robo call'.

The number that is on caller ID is:  423-535-9523

report 423-535-9523  kick there bums and give them a taste of there own tounges