Board Thread:Support Requests - Community Management/@comment-28589934-20151124144629/@comment-1038387-20151124145002

You can always air your grievances to staff via Special:Contact/general.

As for the rest, here are some blogs:
 * User blog:Sannse/How to Get Unblocked
 * User blog:Sannse/How You Can Work Through an Admin Dispute
 * User blog:Sannse/Why staff don't remove bad admins