To stop SPAM calls on your cell install the APP, TRUCALLER, it is a free app!  It alerts you with a red "flag" and you do not have to answer the call. Many are identified already by the  TRUCALLER APP. If a new one pop's up, you can add it. The APP is free...  I am sure there are other App's out there but this is the one I have and love it.. ***Received a call from this number, knew it was a spam caller but I had time to kill so I answered it! It was Card Services! They were to reduce my credit card interest rate. They said that they were tracking me for months but still wanted my CC number? Oh sure!! I wasted their time till they finally hung up on me. I now interned them into my TRUCALLER APP. Never to be talked to again. That is unless I want to waste their time as that is really the best thing to do if you have time.  MCI