The client is clearly provoking a conflict, ignoring all suggested options of settlement. Earlier this client said that all information, violating the user agreement had been removed, but the investigation found out that, on the contrary, there is much more such information now. All further discussions of this issue will be held solely with the client and only after eliminating all negative effects.
You have no right to keep the funds regardless of what "information" the customer published. You can terminate your service to the customer if they violated the user agreement but you need to return their money.
What an interesting person you are. What is it, double standards? How did you determine who should do what? There are rules, they are everywhere. They are on the stock exchange, in our offline life (a set of laws) and they are on the forum. If I registered on the forum, then I agree with the rules. If I violated - I think they will punish me in some way, maybe they will ban me, lower the trust or do something else.
So why the forum can have rules
https://bitcointalk.org/index.php?topic=703657.0#post_rules and the stock exchange does not? And if we take into account that the wording of the forum rules is sometimes so blurry that it covers almost all possible scenarios, the forum rules can be read as "If necessary, we will do what we want."
23. When deciding if a user has broken the rules, the staff have the right to follow their interpretation of the rules.
If the agreement with the exchange does not mean anything, then what about the forum rules?
I think the rules are needed, they must be observed - chaos will be without rules.