Hi Llayton,
I can understand why this has been so frustrating, especially after spending so much time trying to get through to support.
If you already have an online company file linked to your serial number, that can affect whether another file can be brought online under the same subscription setup. Because of that, this usually needs to be checked from our side to confirm what options are available for your account and file.
If calling hasn’t been getting you through, you can also get in touch with our team through your MyAccount support options here: Get help and support
Regards,
Earl