If you have an Android phone, create a contact named ".Ignore" and set the contact properties to "Send straight to voicemail". Everytime one of these numbers call, add it to the .Ignore contact. They'll only call once, the rest of the times, it'll go straight to voicemail. You'll never hear your phone ring when they call.
Not sure why I'm supposedly reporting this # it's not like they will do anything about it. Just like the DO NOT CALL REGISTRY These idiots who call from all the different #'s are relentless. Disgusted with all of it!!!!