I would like to make this question very generic instead of very specific.
Take a situation here. Suppose if any user gets banned from the site so and so allegations, and if that user doesn't feel those allegations are not true. Now
Can the user ask the moderators to prove those allegations? Can that user go above the moderators and appeal? If the user can appeal for the moderators decision, up to what extent of hierarchy he can appeal?
Research that I have done:
Since this is very specific question to SE, I have tried to search for similar questions in meta. How ever I didn't get any posts which covers my question.