Miscellaneous topics that do not fit into specific categories.
Hello
If you go to your account https://account.live.com > subscription, is family plan listed there? if so, click on manage and cancel it there. Then go subscribe the personal plan.
Use this method to chat with support for refund. Go to https://support.microsoft.com/contactus, Type "Billing" and press Enter. On the next screen, click "Contact support" at the bottom of the page, then choose "Microsoft 365" > "Manage my subscription". You’ll then see the option to chat with a Microsoft support agent who has access to your account to help review the issue.