The protocal is first you aproach them peacfully and lecture them on what they did was wrong.If they respond aggresvly respond with "i'm trying to solve this with you peacfully.You only get them banned if there doing something of high threat level. but other than that you either make them stop or delete what they did.
also, not to ask too many questions, but you delete your comments afterward too, right? and is there anything we can do while waiting for bounties to roll in?
sorry I was gone for a while.No there is no rule on deleting comments but if they delete your comments they are not willing to change at all.What you can do is think of rules or ask questions