you should have relized that in todays world underage is very sencitive subject, saying that did you no good at all, I also agree you need to appeal this ban by showing your id to them showing who you realy are, but you still have a issue to worry about, the idea of stating you were underage will cause you to be labled as one that wants to present yourself to find someone that is looking for are you are a not so nice person, best bet is to forget all about the account and just create a new one, to many risks to try to just fight it, so many have created new accounts its so easy just do that and forget the past, good luck to you