scam! scam!

Said I needed to call immediately to avoid a federal action against me, that this was my second and final warning.

about half a message. No name. No company. Last attempt to contact. Threats about something to do with federal agents, etc. A real professional attempt at ? Figures, they operate right among the biggest criminals in the country. Appear to be out of MD. with all the politicians and other criminals. But we can't find or identify them. LOSERS!!!

That call could have come from anywhere in the world.  I guess you have never heard of this?

Caller ID Spoofing:
https://en.wikipedia.org/wiki/Caller_ID_spoofing
https://consumercomplaints.fcc.gov/hc/en-us/a ... ID-and-Spoofing
https://www.fcc.gov/guides/caller-id-and-spoofing

That number is the callback number, which IS a Maryland area code; nothing to do with caller id spoofing you pompous [***].