I was just checking another pesty telemarketers number. One of the folks who posted info on that number mentioned a program called PhoneTray. This is used by folks like us to put off unwanted telemarketing calls by playing an old phone company recording that says "The number you are calling is not in service". The mystery is solved. The enemy is using our own weapon against us! The number is not disconnected. This is a smokescreen to hide their identity.