I have been mute banned for 4 weeks now. END IT

For some reason I have been mute banned for 4 weeks now in Reach. I can’t even talk to people in CUSTOM GAMES. I can’t even hear a single person.
I am not a sqeeker, I do not slur or curse at people. I believe I was mute banned for either talking about the canon with some other players (friends) or because of my rank.
Please end this!