I've always found it a little silly that the game has a profanity filter you can turn on, but they still ban for using profanity. What's the point of the filter then?

However, I can understand why they wouldn't tell you what you said. They would also basically be telling you who reported you by doing so. Unless you swear at everybody all the time. It's probably against their policy to tell you who reported you so you don't go seeking retribution or anything.