I just put in a ticket, my friend put one in beforehand as his account is not suspended and we literally do virtually everything together, the only thing I did differently than him was sell things in zone chat.
Scratch that, he even did that, and the only person I ever mailed in game was him! I have no idea what is going on or why, all I know is I've been suspended and probably under suspicion of "duping" because Zeni didn't close the guild bank system fast enough! I've never even used the guild bank!!!