Bests & Worsts Reviews from Amazon

As most people know, the Do Not Call Registry has so many exceptions (surveys, charities, supposed credit card companies, etc.) that it's useless for blocking spam. If you ever put your phone number on any online order, you've given the company permission it to phone number aggregators; I accidentally did this and started getting at least four spam calls a day. So I bought this blocker and I'm THRILLED with it. When my caller ID shows an unknown or spam ID, I click the button and the number is permanently blocked: it never rings again. (And if you have any problems setting up your phone--as I did--the company responds to e-mailed questions within 24 hours.)