Received a call from this number showing that it was from DC, USA. I suspected it was a scam caller, so I didn't pick up. They left me a lousy unclear voicemail that said "Appearance before the magistrate judge or grand jury for a federal criminal lawsuit. My number is (202) 558-2078. I repeat, (202) 558-2078. By you cooperate with us and help us to help you. Thank you. Goodbye." I blocked this number on  my phone afterwards. A few hours later, I received another stupid call from them, but with a different phone number.

Hello,
I just received the same phone call as you describe. I blocked the number. Hopefully that will stop the calls.

They are calling me from this number. Scammers

These are scammers and I have had multiple calls from them. Block the numbers, and do not worry!

Just received call from this number scam.  Seems on the order of the IRS scam. They just changed it to the Treasury Department