How to get unbanned on minecraft?

I accidentally broke a block on my favorite minecraft server. I would have replaced it immediately, but it was glass. I was immediately banned from the server, but I don't know for how long or if it's permanent. So I wanted to contact someone- a server admin or mod maybe, and explain what happened so they would remove me from the ban list. I don't know how to contact them though, so I need advice on that more than anything.

P.S. It's a small server, with a max of 30 people, if that helps.

They might have a website or a profile on the Minecraft forum. If i was you I'd try on there.

Haha minecraft is ****

You don't. Go play a real game where you aren't a square