If you have applied for a visa and it has been refused, you generally have a right to have the decision reviewed by the Migration Review Tribunal.
The first thing that you need to know is that you generally have between 28 days and 35 days in which to appeal to the Tribunal.
If you have applied for a visa and it has been refused, then you must appeal to the Tribunal within the prescribed period. Make sure that you are appealing within the time frame. If you don’t, then you won’t be able to appeal. If you don’t appeal to the Tribunal within the statutory time period, then you will probably have to leave the country.
When the Tribunal deals with your matter, the Tribunal will be looking at your matter afresh. That is, the Tribunal will be looking at all of the evidence and making its own decision as to whether the visa should or should not be granted. If you have some new evidence which has just recently come to light which may be of relevance to your case, then make sure that you mention it to the Tribunal when you get to the hearing.
The Migration Act is very very complex. So please don’t think that you can represent yourself at the Tribunal. Your must get a migration agent to help you. If you try to do it yourself, then you will make lots of errors and there is a real likelihood that your application to the Tribunal will be refused, and you will then have to leave the country.