Deadfront isn't really explaining the situation well.
We can't unban you because we have no idea if it was you or your roommate hacking. All we have is your word, and four different accounts from your IP address.
https://www.skial.com/sourcebans/index.php?p=banlist&searchText=71.198.232.72&Submit=
The account that got banned is this one
http://steamcommunity.com/profiles/[U:1:200064573]
And if you notice, the name on the profile is Matt. Which is what your name is on the forums, and is the name of the account you linked us to in the OP. In fact, the account in the OP hasn't even been setup yet. So it looks like it was you that was hacking.
I even checked our logs and all four accounts tried to connect within a hour of the ban, and these four accounts tried to connect to the same server. So that is highly suspicious as well.
Even if that was some odd coincidence, we still can't unban you. There have been four accounts with your IP that tried to connect. Which means alt accounts are being made to bypass the ban.
Remember guys, just saying no in an appeal makes us look bad from a third party view. If this was linked to Reddit without an explanation it may be misinterpreted incorrectly. If we post damning evidence in the appeal, than any reference to this thread wouldn't matter because they can see we have our shit together and our evidence to support the ban.