You got a new ban - i.e. before being banned for 14 days, You should have got 3, 7 days bans - for posting posts with little or no added value. As an example one-line worded posts, +1 post, etc. Also you being in a signature advs campaign give you a presumption of guilt.
Bans usually are not handed-over immediatly due to the limited amounts of Mods available to the task but in 1 or 2 weeks time.
You can appeal to theymos but you have to present him with a very strong case of you being innocent.