Where do I complain about a ban?

[talah]

Someone got banned and I'm unhappy about it and would like to raise it with someone.

Obviously I don't want to make a thread about it and I also don't want to approach the person responsible for posting the reasons for the ban.

I want to find out why the ban happened and who decided the reasons given for the ban were appropriate. Who can I talk to?

[talah]

Thanks, I've pm'd you.