I have a suggestion. Answer your phones so that a connection is made, then UNPLUG YOUR HANDSET FROM THE PHONE FOR PRIVACY AND LEAVE THE PHONE OFF THE HOOK TO RUN UP THEIR BILLS AND JAM THEIR TELEPHONE NETWORK. dO IT EVERY TIME THEY CALL FOR AT LEAST A WEEK. If you have a cell phone it won't even be inconvenient. As many as they are calling should make a NICE logjam when you all pick up and refuse to cut their long distance line to let them off, it also blocks them from calling back of course. Our phone has a button to turn off the ringer, I'd be using that too, if I were ya'll. I'd try calling the phone company and the DO NOT CALL network too. This is quite illegal.