I received a call from a person who said she was a "process server" saying there was a civil complaint and I needed to call 800-984-0871 and they would send me a sealed envelope explaining what it was about.
I did a reverse lookup on that 800 number and it was not linked to anyone. I don't think official papers are served over the phone and suspect this is a scam.
These people are ridiculously rude. They are harassing my family and their neighbors (people I have never met) and continue to call but are unwilling to provide any information.