It just asked to enter the 4 digit extension of the agent trying to be reach...or leave a voicemail after the tone...maybe its a bill collector.

They are a debt collection agency.

Grrr ... I keep calling them back and leaving them messages that they are to REMOVE my number from their list and that I've registered ALL my numbers with the National Do Not Call Registry. I am registering a complaint. Like it will make any difference at all ...

FYI from their site: *Reminder: Even if your number is registered, companies with which you do business may continue to call you. So may charities, political organizations, and telephone surveyors.

There are plenty of legit-sounding excuses. Still I think it was worth it to register -- I think we get fewer sales calls than we used to. Register at: https://www.donotcall.gov/register/reg.aspx

I received a call on my cell phone not messeage. Cant find out who it is

I received a call from this number. They didn't leave a message of course.

This number calls, i answer 'hello?' and get a dial tone.
anyone have any ideas?

just received a call from this number, no message was left, when I called back - it is an automative voice just asking to please enter the 4 digit extension of the agent trying to reach you, or leave a voicemail.
well i am not leaving a message, if THEY ARE NOT LEAVING A MESSAGE.

just got a call from 925-808-7630.  left no message and just looked it up it said that the number was unpublished.  so i didn't even try calling it back.  just wondering if anyone knew anything about it.  And i don't want it calling me back.  Since i don't know anyone in CA

i think it might have something to do with the coast guard.  i just missed a call from them, and the area code is the headquarters for the USCG. and i'm in the coast guard.

i started getting this too- no one ever pick up when you call it back