Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Dear @Tom Farrell
You can check whether your subscription has been successfully canceled by going to Services & subscriptions.
If the subscription shows an expiration date instead of a next billing date, recurring billing has been turned off and the subscription will expire on that date.
For the refund, Microsoft will show whether the purchase is eligible for a refund during the cancellation process. If you don't see a refund option, you can check Microsoft's refund guidance here:
If you still need help with the refund, you can contact Microsoft Support.
If the subscription was purchased through a third party, such as Apple, Google Play, Amazon, or another retailer, you’ll need to request the refund directly from that provider. More information is available here.
Best regards,
Bence