I work in Japan. The agent didn't reply.

Does the subject want to ask, "What should I do if the job in Japan stays and the agent doesn't reply?" ? Settle through negotiation or legal channels. Migrant workers in Japan need a residence permit to work in Japan. If they find an intermediary to deal with the suspected fraud, they can solve it through negotiation or legal channels. Intermediary refers to the connection between opposing poles in different things or the same thing.