An alternative approach: I NEVER answer calls that don't have a user-ID that I know (or a number I recognize). IMO, any legit business, charity, whatever will u

An alternative approach: I NEVER answer calls that don't have a user-ID that I know (or a number I recognize). IMO, any legit business, charity, whatever will use that advantage. Picking up, just saying hello, that's a 'real number'. They'll be back. In some cases, the same (no-ID) number will call several times over a period of days. I add the number to my blacklist and the phone might ring once. As time goes by, the volume of this type of call drops away to one or two a day.