The Elite and Mumble Chat System...

Can some please explain why people in general not gonna say who. Everyone being such tight (fill in the blank). Anyway I tired to get into turn 1 coil. Because my mumble which is being used by cell phone. Is saying certificate required. When your trying to explain and elitest group basicly gives you the finger and said sorry were taking someone else. How do they even know you will or wont do well in coil without voice chat. Now you may asked why using cell phone? Here's my answer one year n 6 months ago my stuff was stolen. So i have no pc. Just for people who asked why not use pc. If anyone can give me rational explaion why certian people are (fill in the blank). That would be great.