The problem is far worse that anyone expects. Technically? It's almost impossible to stop. A technique called "SPOOKING" has allowed overseas and some domestic robo callers to use the phone numbers of individuals who have no idea their phone numbers have been HIJACKED by these phone sales companies. I have called back several of the numbers of these robo callers only to get in touch with a person who has no idea what I'm talking about. Many tell me that they've been getting calls from people asking them to stop calling. When they aren't the ones making the calls. I have gotten calls from one company who uses SEVERAL phone exchanges throughout the COUNTRY. Same people, different area codes and phone numbers. The issue has to be addressed by the PHONE SERVICE PROVIDERS themselves! Only THEY have the technology to stop the spooking and ending these robo calls. But for all the BILLIONS they make from consumers? They won't spend DIME ONE to find ways of stopping the "SPOOKING" and end this constant aggravation.