Maybe it's time for a nice class action lawsuit against the phone carrier. Say 10,000 damages per call. This may get there attention to take action. They no doubt have the ability to track and block these call very quickly.
It's a dialer. This should be illegal. They change the phone number every week and use a new one. I've reported the dialer numbers, but nothing ever happens. Phone company can't seem to do anything about it. Same experience that everyone else had, pick up and no one answers. When you call back, it says number is no longer in service. I can't believe they keep getting away with this.