Thanks for your post and apologies to hear you're thinking about moving providers.
We can certainly check this out for you. We will need to confirm some information with you though to allow us to pass data protection.
I have sent you a private message regarding this and will investigate further once I receive your reply. Just click on the little plum envelope at the top right hand side of the page to access your inbox.
We're not able to help with changing the deal you're currently on but the teams are always happy to review things. Give them a call on 0345 600 0789. They can go through things with you to see if there is a better deal which will benefit you more.