If you are referring to Mozilla VPN then see https://support.mozilla.org/en-US/kb/how-do-i-request-refund-mozilla-vpn https://support.mozilla.org/en-US/kb/how-do-i-cancel-my-subscription-mozilla-vpn If you need more help then you can create a support ticket at https://support.mozilla.org/en-US/questions/new/mozilla-vpn/form since Mozilla VPN is a subscription product.