Blocking won't help....This telemarketer uses a computer program that makes different random numbers and names show up on your caller I.D. so blocking their numbers won't work, they SPOOF the caller ID and will just call you back and make a different random number appear on your caller I.D. - I have a call blocker that blocks all numbers coming from any area codes that I choose. The number still shows up on my caller I.D., but the phone doesn't ring. This greatly cuts down on the out of state telemarketers but unfortunately I have to put up with the local telemarketers and calls from other codes where I have family and friends but I never answer unfamiliar numbers anyway. - And by the way, blowing a loud horn into the phone has no effect as the phone company limits the loudness of the sound that the phone can produce so it won't hurt ear the drum.