How do I cancel my subscription to the SHOWTIME streaming service on Roku?

On the web:
1. Go to and click on 'Manage Your Subscriptions'
2. Find your Showtime subscription and click on 'Cancel'

On your Roku:
1. From your home screen, find the Showtime channel and press '*' on your remote
2. Select 'Manage Subscription'
3. Select 'Cancel Subscription' from pop-up window

Note that if you cancel while still in your free trial period or before your expiration date, you will continue to have access to the service until the trial or subscription period ends.