I upgraded using the TV upgrade app, however since then the subscription model has changed. Premier Sports was £9.99 and BoxNation was £11 - Now they charge £12.99 for Premier Sports, BoxNation and LaLiga TV
The app and IVR on 150 upgrade may still be set up for the channels individually rather than the new combined product.
You will need to speak to someone to add on the Premier Sports for the 30 days. I currently pay per month - you can give them 30 days notice to remove it at the same time as the agent adds it on for you.