Scammers! This (fake) "organization" has been calling off and on for 15 years. The phone numbers they use appear to be spoofed or burner phones so it's a waste of time to research where you think the call is coming from (based on the number appearing on your call display). They change number extremely frequently so blocking their number doesn't last long - they just continue calling using different numbers. They never leave messages but if you do talk to them they do sound intimidating, and they pressure you hard for "donations" (which probably is quite effective when they're talking to seniors).
Caller ID says: San Rafael CA. Caller heard Sentry's warning and hung up without leaving a message. Bad sign.... usually indicating useless sales call, low-life scammer, or worse.... Many of these calls are from the lowest of the low, the foulest of the foul... dirt bag, scum-sucking bottom feeders who deserve a nice long stint in prison. Thankfully Sentry shall now block this number forever! Good riddance, useless swine!