Only just saw this thread, but I've said exactly what is being discussed here in the other thread OP opened:
https://bitcointalk.org/index.php?topic=5404704.msg60491521#msg60491521It is incredibly unethical that exchanges are simply allowed to nullify any claims against them, even if those claims are unresolved, and retain a 100% positive rating on BestChange.
We don’t have a notion of a “negative review” on our website, the red marks unsolved financial claims to the service.
If the exchange in question is the one deciding when a claim is resolved, without any independent verification, then the whole system is utterly meaningless.
When funds are frozen on an AML basis, the jurisdiction of the exchanger itself rarely plays a role, because they often follow instructions from the custodial service that they use to receive and store cryptocurrency. Such services are subject to all international AML legislation of the countries in which they operate (in fact, all world). Therefore, your references and hints are inappropriate.
OpenChange should then inform OP of which custodial service is holding his coins or which law enforcement agencies his coins are being handed over to, so can pursue other avenues to reclaim them. OpenChange repeatedly closing his claim despite it being unresolved is incredibly shady.