I don't know of any app that will block a number on an outgoing, and obviously you don't as well, therefor I only mentioned the best alternative that I know of. If the OP is not wanting bothered by incoming calls from people that he calls, then GV will give you the option of rejecting the call, plus with "Mr. Number" he can block the number that way as well.
Seeing as you had no HELPFUL input for the OP, you post was pointless other than to showing your intellectual intelligence. As for "playing", seem you are the troll trying to "play" in this thread. As for me, I'm done with "playing" YOUR game.