Who called from 3604743915

I get the same crap from (360) 474-3921 (WA) and (425) 390-8919 (WA). I also get hit from OR and MA. I have never answered and they never leave a message. Called back from my office land line, and I get the UK accented "temporarily unavailable". Any advice on how to get to stop appreciated. I'm on the do not call lists.....

Found this number on my cell phone missed call area.  Appears to be related to these two numbers that also show up on my cell and which are in Washington:

425 390 7819  Answered once, a robo "survey" call.  
206 496 0950

I'm on the no call list on my land line and believe cell phones are excluded from cold calls.  My cell plan charges for both incoming and outgoing calls.

called my cell; left no message. i am on the do not call list, to no avail.

Friend who works at AT&T said you can create a contact with that phone number called "blacklist" or somthing similar.  Some phones allow you to edit the contact and send it to voicemail immediately.  That way you don't even have to pick up the phone.

They have been calling and I never answer since I have no idea who they are.  I am also on the Do Not Call Registry so why does this keep happening???