I too got a call from them. Apparently they are the same scammers who pose as a focus group on craigslist to get numbers and then they just keep calling you from different numbers. Today there were at 415-449-7606 but I have as list of 20 something numbers they call from in the SF Area so they are probably cloaking their real number, or constantly changing their number. If you block them expect them to call in about a month with another nearby number and "PRIVACY" in the caller ID listing on your box. I'm giving my list of the their former numbers to the cops - with such a list they probably can identify who they are from all of the phone company records...