I need help to Switch to Microsoft 365 Family Classic and receive a refund in Australia.

I need help to Switch to Microsoft 365 Family Classic and receive a refund in Australia. There is no link in the email to change my subscription just to change to monthly billing.

In the Subscription section of my account I am not given the option to select Microsoft Family Classic just to cancel my subscription.

• If you switch to Microsoft 365 Family Classic by 31 December 2025, we’ll refund the difference in price between plans, starting from your first renewal date after 30 November 2024. We’ll process your refund to the payment method you use to subscribe within 30 days. Once the refund has been processed, it will be reflected in your Microsoft account. This refund option is only available to subscribers in Australia who receive this email and switch to the Microsoft 365 Family Classic plan by 31 December 2025