If your charging session has stopped but the session still appears to be active in the Zapmap app and does not end when tapping the "Stop charging" button, this is likely due to a temporary communications issue with the charger.
Please contact our support team, who can end the session for you.
To reassure you, when paying with Zapmap, you'll only ever be charged for the energy received while charging and any other applicable fees, so this issue won't result in any extra charges.