How can I block someones calls?

I need directions on how to block a specific cell phone number from calling my cell phone.

Is it possible to block someone's number from your phone,like they can't call you at all no matter what service your using?

I want to call someone but I don't want them to know my number. What do you dial so it will block the number so they can't se...

Is there a way to block someone so they can't call my Cell Phone? I 'm tired of being harrased day and night.

How do I block a cell phone number from calling me on my cell phone

A random person texted me and now they won't leave me alone..I have boost mobile, is there a way I can block the number from ...

How can you find a blocked number that calls your husbands cell number

On windows live/msn do you need a microphone to call another computer? Will they hear me talk if I dont have a microphone?

What sequence of buttons do I push to block the incoming calls on my cellular phone by t mobile

Family/friends can not call my house.they are told to use *82,or there call won't go through.