Who called from 2022806720

Said that he was a police lit looking for Marcella cotton

DO NOT PAY THEM.  this is NOT a law enforcement office,  not a government office,  this is a group of scam debt collectors who are violating the law... they are not legitimate, and can't do anything to you.  DO NOT PAY THEM>  report them to the Federal Trade Commission immediately.

This is a scam number and I got a letter from them

Is this legit or fraud number and place
CFI Investigations Washington Dc 202 280 6720?

https://tips.fbi.gov  submit your story here