Ok, after much thought we think it must be an error on their part, though Richard hasn't had a chance to call them, we have emailed, live chat, posted on the forum and no one will give us a reason. So we are investigating other hosting providers, and we might move our domain to a new host for the new site.
We also have a small suspicion it might be a folder full of music (which is password and hidden) belonging to someone borrowing a sub domain.
The biggest problem is they will delete our data in 14 days if they do not resolve this. And we can't access the FTP or DB to grab the files and information. Hopefully it can be fixed soon.