2 years so far
Each call is emailed to you for review and either whitelist or blacklist the # for future calls. Or you can let jollyroger handle it all they do a good job identifying scammer and robocallers. You can even institute a 'press 1' option for a human to leave you a message.
When AI became available, jollyroger quickly adopted it. The recordings play off of the questions and sales of the callers! The longer they talk, the more of a back and forth conversation the AI bot makes it. A little over 8 minutes is my longest on the hook. Really wastes their time.
The best part is once you've blacklisted them one ring is all you'll ever hear. All for one dollar a month! Everyone should have it...