Chris -
Thanks for your quick response - will be glad to post the resolution when it is available. I looked at the billing and subscription Team page that you linked to, however I am unable to create a ticket because the steps involve me accessing my Office 365 Admin page - which I no longer have access to - the admin page has been completely replaced with this:
switching plans: status
While your plan is being switched, admins can’t use the Office 365 portal, but users can still access their services.
See more details about switching plans |  | 1 | Order placed 12/19/2013 6:53:03 PM, Order# 5767d4c6-9b23-4f4b-b6e5-f6113842efcf |
| | 2 | Setting up new subscription This step normally takes around five minutes to complete. If this step isn’t complete in one hour, please contact support. While your new subscription is being setup you can close your browser and come back at a later time. |
| | 3 | Reassigning user licenses Important: To complete the license reassignment, you must keep your browser open. |
| | 4 | Completed |
I noticed there is a phone support option - which I may have to use unless you can suggest an alternative way of submitting a ticket. Unfortunately - it may be a day or so before I'm able to give support a call due to other commitments. Was really hoping to be able to submit a ticket.
Thanks!