Hi there @bullough
Thank you so much for your post and welcome to the community forums, it's great to have you here.
I am so sorry for any confusion regarding your bill and a big thank you to newapollo who has already explained this. Just to confirm, you are billed as normal up until the day of your disconnection after which you would receive a final bill with a refund for any services paid for but not used.
This final bill will be generated after your disconnection date.
Please do let me know if you have any further issues at all regarding this.