Yes, you can cancel your subscription by following the instructions mentioned below;
Why does Roku keep charging my card?
This is the most asked issue, as many people have canceled their subscriptions. This is happening as you might not have unsubscribed from Roku.
How do I block purchases on Roku?
You need to create a four-digit pin that ensures that the purchase gets blocked
How do I dispute charges on my Roku account?
Follow these steps if you want to take your refund;
With the help of the above information, you can get a guide on How do I stop Roku from charging my card. You can also talk to customer service at Roku for further assistance.