My understanding is that there's a distinction between judicial officers, judges, justices of the peace, and administrative tribunal members. I don't know of any tribunal complaints process. Sorry—that's not true. In Quebec they have an external body. Other than that, I'm not aware of any that review complaints externally.
I don't have any expertise in that area, but my understanding is that because judges don't have limited terms and their tenure from a constitutional perspective is such that it has to be protected, you have those extraordinary measures like the Canadian Judicial Council. That really deals only with instances in which it looks as though they're going to remove a judge from office, as opposed to a question of whether or not a particular judge in a given instance was rude to someone in their courtroom.