Welcome, and thanks for asking before assuming.
Please refer to this link for finding your demos (You must know what map it was on, download the demo from the site and reupload the demo to your ban request) http://www.ibisgaming.com/forums/sho...Links-to-Demos
Here are some other rules you may be curious about: http://www.ibisgaming.com/forums/sho...here-Do-I-post
Refer to this link for making a ban request thread:
http://www.ibisgaming.com/forums/sho...ost-threads%29
Lastly, this link will take you to sourcebans where you can see your ban and make comments when you login: http://www.ibisgaming.com/sourcebans....php?p=banlist