Who called from 2028705850

CID showed "Washington, DC"

My caller id showed "Dist of Columbi"

Called and let and prompted me to either accept call from blank or send straight to voicemail.  I entered 1 to accept call and it disconnected.

Interesting thing is that it was calling my office phone and cell phone simultaneously, really bizarre.

received a call from this number on our fax line a couple of times in a row
call the number back and we just got a busy signal

This is an eFax numner