I got a mildly threatening call from this number.  Harsh tone, insisted that I must call
207-385-9437 and give my address to a process server so I could be served, or I'd lose my
legal rights.

It is an obvious phising scam and these folks need to be put out of business.

They don't ID themselves and are just trying to scare people into contacting a second number
so they can scare you into giving them personal ID information.  

Human FILTH

Received call from 7407771274 same as the Real Person. I got the message to call th207-385-9437 number left me the message the same as others and I had not answered the call it was on voice mail. I do not plan on calling either number back. They do not identify them selves or say what company or what it is for.

fake trying to get information

I got an email saying I'm laundering money and I will be prosecuted

Its a scammer trying to trick you into paying a "fine".  Ignore it.