First of all spamming isn't cool, and spamming competitions are even lame as well. You got k-lined because of that reason and I would probably side with the admins on your network for you getting g-lined (for ban evasion) from the network. The admins k-lined you because they probably figured you would learn from your actions by understanding the consequeces for spamming by g-lining you.

You have the options of either emailing the admins apologizing for your actions and request them to lift the ban (don't expect them to bend over backwards for you) or you can wait it out.