User blog comment:Ducksoup/Why We Don't Unblock You/@comment-5260227-20150920180505/@comment-24258073-20150927000537

If the other members of the administrative team are competent, then a bureaucrat will unblock you and give the administrator a warning.

If the unfair admin is also a bureaucrat, but the other bureaucrats are fair, then they will unblock you, and warn the bureaucrat to be reasonable, or they will report the bad bureaucrat to wikia staff.

If the said administrative team as a whole, is unreasonable, then I'm afraid you'd probably be out of luck.