If I'm understanding the question, we're mixing different concepts.
They don't know that it's a fraudulent call. What we're dealing with here, if we took spoofing.... Actually, I'll go back to the Bell example. That's a system where they're getting callbacks. They're calling numbers, and then they get a callback because people do it automatically, and then they get money.
People are making money on the international accounting settlements. I won't go into the details, but they're irregular. You shouldn't be getting thousands of calls from “a place”. It's the pattern of calls that you're dealing with.