You can always appeal
Any decision against your account can be appealed once, and someone who wasn't part of the first decision reads it.
What helps
Be specific about what you think we got wrong. If there's evidence we didn't consider, because you didn't have it then or weren't asked for it, include it.
"I disagree" is a valid appeal but a weak one. "The reviewer read X as Y, and here is why that is wrong" is a strong one.
What happens
Where practical, the original action is paused while the appeal is considered. You'll get the decision and the reasoning in plain language. The outcome is recorded either way, including when we were wrong.
If we made a mistake
The action is reversed and any effect on your standing is undone.