Received calls from this number "Unknown Caller" on 6/9/12 and 6/12/12. No message.
Also received call from 213-785-3630 on 6/11/12, same result.
Jun 13th, 2012
Got this call at dinner time, I answered and I heard "Please continue to hold" followed by elevator music for about 10 seconds, then the line went silent for a bit, then I heard a fast busy signal. I hate these motherf@$%@$#%