Changing a member's membership, adding a hold, or modifying their account can all update future billing.
To view the upcoming billing schedule for a member, go to their Profile > Accounts and Billing tab > Preview.
A window will pop out, showing the charges and the dates the member is scheduled to be billed for the next few billing cycles.
If the window is empty, the member has no scheduled integrated billing charges. This could be because they don’t have billing credentials in the Accounts and Billing tab, or they aren’t set to bill automatically in that same tab.