For those that need refunds.... this area of the law is well established in Australia. It is solid enough to be considered unquestionable. In 2012 the Trade Practices Legislation was remodeled into the current Consumer Law regime, (intended to be easier to directly access by the consumer from home) The new consumer rights regime however does require some action to be taken by the consumer to remedy, it's intended to be much easier, almost automatic, (well as can be) if you follow the instructions. But you do have to action it.

https://www.accc.gov.au/consumers/co...hts-guarantees

It is always advisable not to put this process off, and keep all documentation. But if you have put it off, that may not matter, read the guidelines. Also if going for compensation for time lost (etc) its never a bad idea to make added documentation of your own. i.e.; a note to self; 'I started fitting the tailgate on (date) and it took about x hours, and then...(whatever happened)' etc and date it, and also make a record of any telephone call with the seller. An initial claim for a refund is not a scary process, its designed to be easy. Time for fitting and removing a tailgate should also be available fairly simply. (Rares are goona hate me for that!) Sorry Rare Spares, but if you have a dodge product well....you know the rules!