Ford slow to fix issue?

By the “Peace of Mind” service our 2014 Ford Territory diesel was making a noise, which seemed to be related to the transmission and audible during gear changes. The problem has since been identified – a hole in the baffle plate of the valve body being drilled too small during manufacturing. Ford is aware of the issue, as it is not just our vehicle that’s affected, but has no time frame on when it will be fixed. Our local dealer has said this is because Ford does not know which vehicles are affected or how widespread the problem is. It has been three months. My understanding of consumer law, based on the industry guide compiled by the ACCC and advice from Legal Aid, is that even though the noise itself is a minor issue, it is a major issue because it is not able to be fixed in a reasonable amount of time, so we have asked for a refund. Our dealer is refusing to do this and is maintaining that all we can do is wait for Ford to come up with a fix. They have offered to pay for our first service, as if that makes up for a brand new, top of the line car making a noise it isn’t supposed to! There are two issues that I would hope you would be interested in: the inaccessibility of consumer law because even though we have a right to demand a refund we are powerless in the face of Goliath. We’re not just dealing with our dealer but with Ford. If this is a known issue for Ford dealers around the country, what are they telling new customers wanting to buy a Territory? A car is an expensive purchase for most people, a decision that families like us take a lot of time to consider. When a car fails to meet even the most basic guarantee of being free from defects, what are we left to do? Any help you could offer would be so greatly appreciated!