The billing is automatically created from any CUBEs that have content linked to them. The billing system scans for any CUBEs that have content linked to them on or around the middle of the month, generates the invoice on Net21 terms. Invoices are emailed to the specified billing contact email address. Payment options include manual credit card or manual pay-by-check (click the link in the invoice email), automatic credit card, or ACH (login to our billing portal to setup).
To remove CUBE's from future billing, simply unlink any Schedules/Playlists from any CUBEs that are no longer in use. Keep in mind that depending on what date you unlink content, those CUBEs could still show up on one more invoice.