Who called from 2027408907

Called this morning on my cell, came up as wireless caller, Washington DC.
rang maybe 3 times and they hung up.
no voice mail.

Received call from # that is not on my contacts list, so I did not answer. No voice mail message left.

Called my office number to tell me that I'd won a trip to the Bahamas.

it's a Verizon number but now it says it has been disconnected.

Just received a call from this number. Came up as Cell Phone DC 1-202-740-8907. No voicemail left. I googled the phone number and found this forum - I noticed that just 30 minutes ago, someone posted on this site that the number was disconnected. Odd because I had just received a call from them moments before. I tried calling the number back and, sure enough, the Verizon recording I got said the number had been disconnected.