Take it up with your local moderators. If they think you should be banned I'm sure they'll say something.
Dear moderator, I really appreciate your work! Moderators of Russian chat can not remove the lock or cut it in this they need the help of a global moderator or administrator, so they sent me to you
What he is saying is that they (your local mod) must PM a Global Mod and ask for your ban to be lifted, you cannot.
So apparently they do not want your ban lifted, as they did not make the request for you.