To cancel Xbox Live Subscription, follow these steps, noting variations based on location and interface.
Steps to canceling Xbox Live Membership on Xbox Console
Turn on your Xbox console and Sign-in with the associated account
Select Settings then choose Account to select Subscriptions.
Find the Xbox Live subscription you want to cancel and select it.
Follow the on-screen instructions to cancel the subscription.
Steps to canceling Xbox Live Membership online
Go to the Microsoft account page and Sign-in with the associated Microsoft account.
In the top menu, select Services & subscriptions.
Find the Xbox Live subscription you want to cancel and select it.
Look for the option to cancel and follow on-screen instruction to cancel your subscription.