Board Thread:Support Requests - Community Management/@comment-24847478-20140624185851/@comment-1038387-20140624190637

Admins can block at their own discretion. There's no appeals process.

You can ask the admin politely on his/her wall here to lift the block, but they don't have to comply with that.

Since it's only three days, I would advise you to just sit it out.