I have researched online to purchase a call blocker device that you plug into your phone line. I am buying both the CPR call blocking model V 202 and the Sentry 2. Amazon reviews has great feed back from customers about them. What one lacks the other takes care of. Also Go to youtube and search that model number to see what it does. if you plug it in a certain way you won't be able to use your caller ID. But it's a simple fix or switching is very simple not complicated check it out. believe me I have no invested interest in this device at all. I just want to have peace and quiet like you no phone calls.