I was not able to find anyone mocking you based on your rank in this thread, so I'm not to sure about what your complaint is about. Also, not a lot of league players go to forums on a regular basis, and even less of those individuals got to the LoL forums (Reddit seems to be the most popular one right now). On top of that, this thread falls under the category of Player Behaviour, one of the less scouted boards on a daily basis by the general public, and is a thread with only 20 upvotes, titled "I am unbanned!" and is 3 days old. I'm afraid very few players are going to see your comment and act on it in the way you specify.
If you do genuinely and honestly feel that a Rioter is is purposefully misconstruing what you are saying in order to attack your character, I would suggest submitting a ticket stating the details and providing links to when and where this has occurred.
HOWEVER, make sure you are level headed, review all the information to make sure that you aren't interpreting something in a wrong way, and only bother making a ticket as a last resort when the situation can't be resolved/is serious enough to warrant a second opinion from the company.
My outside perspective on this though, unbiased as I have no connection to you or Riot Tantram, is that you are very angry and voicing your opinion based on that anger, and that this situation is far from serious enough to warrant sending in a ticket; upon review of the situation based off of the ticket sent in, it would be too minor to warrant any action.