What are the rules for helping others?

[vack]

Quick question:

I am definitely a newbie on this server. I try to be friendly and helpful to everyone I meet. 98% of the population has been super cool and the other 2% can be ignored.

But I got hit with the ban hammer because I helped a guy transfer some items and he paid my EC toon a bunch of platinum after I helped him out. Did I screw up because I helped a guy who had paid some guy for his plat?

But that is nor the worst part a buddy of mine got banned because I gave him some of the money I had gotten. As he is also a brand new player and he got hit with the ban hammer as well.

Did I break some rule I cant find?

Is there anything you can do to get a ban removed other than the petition part of the forums?