I sympathize with everyone in the NTSC formatted territories who cannot get their copies to work. Sadly, more than 80% of discs manufactured in Australia are automatically formatted to PAL during the making of the actual disc.
Fixing the PAL/NTSC compatibility is not only a costly exercise, but on the professional level, it is also a very time consuming one as well. Get Music now need to find a new programmer who is able to change the format at the cheapest viable price.
While frustrating, fans in the US and Canada will have to be patient. We are also coming into Christmas and New Year: that as most would know can have a huge effect on business as some companies close down for the holidays.
I'm not defending the company in anyway but right now, hounding them with emails about this seems futile to me simply because it is December already and many businesses are dealing with the holiday season rush.
If nothing has been rectified or sorted out by the end of January, then hound the company with emails.