I believe I can answer for both counts.
You were muted because as Freakshow was giving rules and directing setup for the event she announced, you insisted on talking over her about how great Minecraft is.
You were banned because after being muted, you decided to continue trolling Freakshow in text chat, responding to her voice chats, then elected to tell people to join your server.
For not wanting to interrupt anyone, you were quite disruptive, and completely ignoring any warnings given by fellow users or admins in voice and text chat. Rather than gagging you in addition to the mute you already received, you were banned for the duration of the event. Your intentional disruption of the event forfeited your privilege of being included.
As your ban has expired, no further action will be exercised on this appeal. Please be more courteous in your use of comm channels on your next visit, and mind directions from admins.