It was pretty obviously a mistake, based on what you've told us, and will undoubtedly be revoked as soon as whoever can do those things reads the message you sent. What, may I ask, was the purpose of posting about this publicly? Especially considering that you already sent a private message back to the person who gave you the infraction in the first place.

P.S. How about writing congratulatory posts for staff members who do something right thing? It'd make a pleasant change from the omg I've been banned, lol posts.