Resolve through negotiation. You can't live without the other party's information. The other party is an illegal organization, right?

Alarm. If it is an illegal agency, call the police immediately.

Prosecution. If it is a legal organization, wait until the court to sue for compensation based on the contract and payment records.

Complaint to the Trademark Office. If it is a legitimate organization, file a complaint with the Trademark Office to have it disqualified.