I just ran across your post and there is a solution. I too run a business and I have taken an old PC laptop and installed CallClerk on it. The one nice thing you can do is block by the NAME and not just by the number. Most of the spoofers out there change their number but not the name. In this case "LOCAL RANKING R" They use dozens of numbers but still use the same name. Set the software to hangup on these types of calls and you are well on your way to a more productive business.