Report illegal robocalls to the Federal Trade Commission at consumercomplaints.fcc.gov or call 888-225-5322 and sign Consumer Union petition at EndRobocalls.org to pressure phone companies to start offering free call-blocking technology or Telephone and/or internet providers need to block perpetrators. Criminal robocallers need to be fined and  jailed. Wrote my 2 Senators and Congressperson to voice dissatisfaction with current state of affairs regarding robocalls. Maybe they will actually attempt to stop these thieves of time and probable scammers, but not holding my breath. National Do Not Call Registry is useless.