A call blocker is useless b/c they use a brand new number everytimr. I NEVER answer a call i dont reconize. If u need a seperate call blocker for every number then u would need 1000's of them. Maybe thats what these guys sell, call blockers, and this is how they get ur business, keep calling u over and over. I never fear though as it is bad luck to F with me. (Source: 44 yrs. experience)
You might want to update yourself on the capabilities of various call blockers. Your post indicates that you know next to nothing about them. Google and read. You might decide to come out of the closet and buy one. Worth every dime.