Same thing as the guy above. Got a random call from 408 819 9772 which is apparently located in California. Said hello. No answer. Something's off here. I hung up. Came straight to this website afterwards. Can't be too careful.
Rcv'd a call from this number and they left no vm. Called it back and continue to get a busy signal. Did a reverse lookup and number is from the San Jose/Campbell, Ca area...