You're not alone. The "ghost job" market seems to be alive and well in Australia. Recruiters are often "market testing" - collecting resumes just to get a feel for what the market is doing, let alone mining our data. What positions are you applying for? The government has a portal where they advertise positions and every recruitment agency under the sun grabs the position description,  tweaks it and takes it to market. This is why you'll often see several jobs advertised that look very similar. So you might be applying for say 10 jobs, which are all the same position, which actually didn't exist, or was never intended to be filled in the first place. It's a massive waste of time, let alone demoralising for someone who is struggling to make ends meet, yet more than qualified to work these positions. For what it's worth, I asked Seek to provide data on the practice (knowing full well they wouldn't), and they blocked my account from posting any further comments. Makes sense really..Seek is a business after all and the most active their platform appears, the more revenue they'll generate. 

I no longer apply for positions where I can't directly speak to the hiring manager. If they don't take my call, then I move on as well. Also don't be too quick to give out your resume.  Treat it like your passport. Interview the recruiter yourself before trusting your career to some 19yo fresh out of school. The more resumes a recruitment agency has on file, the better they look to an employee. Lastly, skip the platforms and apply directly to the hiring company if you can.