I was banned on iSketch.com. Help?

I was banned the other night from the online game iSketch.net, but it was my roommate that pissed them off and it got my IP banned, so I can't play anymore. I tried sending them an email, but i guess the chances are slim that they'll unban you. I guess they're ridiculous at holding a grudge, even if it wasn't your fault. Do any of you guys know a way around that ban so I can play still? Like a proxy server, any way of an IP change, or any other little secrets?