Several years ago, the wife and I started letting all of our phone calls go directly to voice mail. If it is an important call, you will leave a message. We will only answer a call when we recognize the caller or are excepting a call from someone. I have noticed over the last couple of years that the volume of unwanted or scam calls, has dropped off considerably, to almost non-existent . I had read somewhere that by not answering and letting all the calls go to voicemail, that over time, the scam callers give up and list the phone number as not functional. I don't know if this is true, but it seems to work for us. It doesn't hurt to give it a try.