Sign in to your Peacock account
Go to Account settings
Select Plans & Payments
Choose Cancel Plan
Follow the prompts to confirm cancellation
If you subscribed through Apple, cancel in your Apple ID subscriptions
If you subscribed through Google Play, cancel in your Google Play subscriptions
If you subscribed through Roku, cancel in your Roku account
If you subscribed through Amazon, cancel in your Amazon subscriptions
Check for a confirmation email after canceling