Use Only A Registered Migration Agent - Australian Visa Consultants

Registered Migration Agents have to abide by a strict Code of Conduct, maintain Professional Indemnity Insurance, provide accurate and current immigration advice and always act in the best interests of their clients.

Moreover, if you have a complaint about the conduct of your Registered Migration Agent, then you can complain to the Office of the MARA and they will investigate. But if you use an Unregistered Agent, the MARA has no power to investigate or punish to Agent, therefore it's at your own risk.