https://techcommunity.microsoft.com/discussions/microsoftlearn/frontierhow-much-does-it-cost-to-cancel-frontier/4321551
https://techcommunity.microsoft.com/discussions/microsoftlearn/%E3%80%90frontier%E3%80%91how-much-does-it-cost-to-cancel-frontier/4321551https://techcommunity.microsoft.com/discussions/microsoftlearn/%E3%80%90frontier%E3%80%91how-much-does-it-cost-to-cancel-frontier/4321551