Received the call this morning, 1100 EST. I answered, caller hung up.

Got a call this afternoon from 213-291-3201.
Some telemarketer trying to get me to refinance my house by taking advantage of something available in the stimulus package

I have received 3 calls from 213 291 3201 on my cell phone.  When i tried to call back I got a recording that the mailbox was full.. The last call came in today , i wasn't able to access my cell. When I called back I got the same result, I left a message saying I didn't know who they were but to stop calling my number.

receive numerous calls from this number. caller always hangs up when I answer. Have no idea who this maybe.

Same thing here.  No one ever there and when I call it back then I get a message saying the box is full.  This is starting to really p**s me off!!