I received another call from 202-738-1122. Received one several months ago so I knew it was a scam and did not answer it. If I do not recognize the number, I do not pick it up. As I suspected, they did not leave a message. The last time I received the call, they called back a couple of times and the last time I told them I was the FBI and would be at their door in 1/2 hour to arrest them and they quickly hung up.