I have spoken to King to hear his side of what happened and he says that you were being disrespectful to the player DarkWarrior over voice chat. King clearly asks if Dark is offended by what had been said as you were mocking how he pronounces the word "Mic".

King was entitled to issue that warning and it will become inactive in a day.
I have also told him for the future to make sure he notes all name so he can punish all wrong doers equally.