Saw this number on caller id and immediately manually blocked it on my call blocker that I had purchased. Since I know no one from that area code, will block the entire area code also so if they use another number from 650 area code, they won't get through either.
Filed a complaint also with donotcall, not that they care.
Filing a complaint with the donocall is like writing the number on a sheet of note paper and setting the paper on fire. The result is the same.
Get a phone or other device that can block hundreds of numbers and stop the calls that way. It has worked well for us.