I agree with you. I just received a call at work and they just hung up on me. I also tried calling it back and i get a recording "L.A. zero three, the mobile number you are calling is no longer in service" really?!?!
I also get the same reacurring annoying call. If it IS an auto dial and you have caller I.D., just pick up and use the # sign repeatedly for at least 10 seconds...that's supposed to knock your number out of their automatic system. ps...I'm also on the DNC list....doesn't matter in the State of California, it's called the "Free Enterprise State"!
Also got a call from this number, no one at the other end.. Kept my ear on the phone for awhile after, few clicks then they hung up.
No idea why, but I get calls like this a few times a week at our business, a weird number and the Caller ID shows the calling number as the name. Annoying to say the least, wish I could block these calls.