This number been calling my mobile phone - Please stop it from calling!!!

I received a call from 415 994 0000. It was a guy with a middle eastern accent saying he was from a law office. I recognize his name and voice and he is the same man who has called my work line and he has also called from a different number. These are scammers. They are getting a hold to peoples numbers through websites somehow and calling people harrasing them for money and making threats. They will not provide documentation and are very very annoying. Its driving me up the wall. I have my own business and d not want to change my number but I may have to.

I too got a call from him.  Dumped the call without answering and typed his number into google and wound up here.  Yup, I figured it was another bloke trying to sell me viagra.  That's one more number to add to my blocked numbers list.

On 05/30/2012 I received an unsolicited call from "Jack" of Computer Maintenance Department of Help ____ PC? A man with a middle eastern accent. He stated that I had a computer virus? Is there a law that protects consumers from these type of calls?. To boot he called me on my cell phone and identified me and my email address. Has privacy gone out the door. I cut him short and told him I would speak with my ISP who is paid for the services that "Jack" claims that I need.

This number is constantly callling me. Help!