Same thing - ring twice and hang up. They called me about 10 minutes after I visited a website called Fumfie.com. A request for info on this site identified them as scammers. I have no way to verify that, nor their connection to this call.
Welp, almost a year later & they're still at it so there's proof that the government doesn't give a hoot & they most certainly didn't "go & get them." It's up to "We the people" to deal with these scumbags!