Recording intended to sound like a live call "hey sorry my head set was not working". "Can you hear me?" Say YES and they got you. They use your recorded voice to apply charges to your accounts they may already have access to. Don't answer it or if you do just wait and you will see it is a well timed recording.
As with the others on this site, call from 818-688-4295. The new head of the FCC claims he is going to do something about this; because of this claim please do as I am: file a complaint at: https://consumercomplaints.fcc.gov/hc/en-us/requests/new?ticket_form_id=39744 and then contact him directly at: https://www.fcc.gov/about/leadership/ajit-pai
Click the email link on the left side of the page. Maybe if we all do this all the time he will actually do something. Thanks.