If you were warned or kicked from a room, this could have come from a user that was moderating the instance, or from a moderator.
All moderation inquiries regarding a ban must be sent to firstname.lastname@example.org from the original account holder. It must be sent from the email used to create the account and should include the username in the subject line. If you have been banned, this is the only method you have available to contact VRChat staff regarding your ban.
Emails to the moderation team may or may not result in a response, depending on the case.
Please always keep the Community Guidelines in mind when you're playing VRChat.