I'll quote again from an unknown person:
"Never ague with an idiot, they will drag you down to their level and beat you with experience" ... which is EXACTLY what happened for you. You got banned, and he didn't. End of story. If you can't follow that very easy rule, then you deserve your 1 week ban, sorry. Its not too long, you get angry at first, then, a couple days later, when emotions have settled, you start to rationnalise and put things in perspective. You don't have time to do that in 10minutes.