Hi Frank,
Unfortunately, we don’t have a provision for refunding unused support provision. (The very act of performing a refund would use more support time than our average customer uses in a year!). We’re sorry you won’t be using UD in future.
Just in general (whatever you end up doing) I’d personally not recommend having web hosting and backups from the same provider – it’s an “eggs in one basket” situation. If the hosting setup gets hacked, or the hosting company deletes your account by mistake, or something of that sort, you could lose both your hosting and backups in a single act, which isn’t great.
Best wishes,
David