Payments will continue at the Out of Contract rate until you cancel your account, having given the required notice. You can't just stop paying. When you want to start again, it will be a new account with whoever your chosen provider is (including Plusnet) and a new connection. Some of your existing line may have been repurposed and used for someone else (on ADSL or FTTC).
You'll need to give Plusner a call, or send a letter to cancel as per the cancellation policy: https://www.plus.net/help/legal/cancellation-policy/
Superusers are not staff, but they do have a direct line of communication into the business in order to raise issues, concerns and feedback from the community.
