To block robocalls on some landlines, for free, register on nomorobo.com. Also available on cells for a monthly fee.
To activate “anonymous call rejection service,” dial *77 on your phone. Check with your phone provider to confirm they offer this feature.
To list your phones on the National Do Not Call Registry - donotcall.gov/
TIPS for dealing with robocalls:
•If you answer a robocall that invites you to press a number to opt out, don’t do it! That will verify that yours is a working number and can leave you vulnerable to receiving more calls.
•If a caller asks, “Can you hear me?”, do NOT answer “Yes.” The caller can record your voice signature and use it to authorize fraudulent charges by telephone.
•If a caller claims to be from the IRS and says you owe money, do NOT respond.
For more info see:
“Robocalls, and Their Scams, Are Surging" by Tara Siegel Barnard, New York Times, May 6, 2018.
“Robocalls Flooding Your Cellphone? Here’s How to Stop Them” by Christopher Mele, New York Times, May 11, 2017.