Thanks guys, appreciate the support.

Unfortunately this wasn't the first time experiencing a major error at UoM. D:
I applied for a mid-year transfer in 2012 from Arts to Commerce since I hadn't met the BCom pre-req of methods (regrettably didn't take methods in VCE) and had to do an equivalent subject during the first semester. I was sure that I was going to get an offer since not only that I passed the maths subject but also obtained a high average, though unfortunately I didn't receive one during the offer round. After contacting several admins and finally reaching someone who was in position to check the issue and provide help, I was told that there was a mistake and my uni results for the first semester wasn't recorded in the VTAC system, meaning that I was deemed a school leaver and never started uni under student number, or something ridiculous along those lines, so I couldn't be transferred since it would've seemed as if the maths pre-req was still unmet. Anyway, I was lucky I had someone who promptly solved the issue and received the offer before the semester started.

tl;dr: As prestigious as UoM may seem, mistakes can happen. Always follow up and double check on things if you feel the need to. Also, I hope these types of errors don't occur to anyone ever, nobody deserves to be unnecessarily agitated over this stuff haha.