You should be able to cancel any subscriptions you obtained via Roku via your account at my.roku.com. Any subscriptions obtained directly with the channel will have to be canceled directly with the channel. You should be able to tell which is which by seeing who is charging your credit card for each subscription.
Roku Community Streaming Expert I am not a Roku employee, only a user like you. Please, no support questions via private message -- post them publicly to the Community where others may benefit as well. If this post solves your problem please help others find this answer by clicking " Accept as Solution.".
Streaming Stick 4K+ 3821 | Streaming Stick+ 3810 | TCL Roku TV 43S245/C107X