there is a mobile app for cell phone users called mobile manager down load this from the market using a andriod phone and block this number from your phones forever. you can put any annoying phone number in the blacklist and forget it. I just did. this app works great.
No need to download an app if your cell has the option of sending a phone number straight to voice mail. When I get one of these calls, I save the # as spam, then set it to go to vm. It never rings again. :)
This person called and did not say a word when I said hello. They just kept me on the line until I hung up. I've had this number call me a few times now. I have no clue who they are or what they want. I did not give them my number and they do not have my permission to be calling me.