To cancel a Prime Video subscription, go to Manage Your Prime Video Channels and look for Prime Video Channels. Find the subscription you wish to terminate. Select Cancel Channel, then confirm your decision.
Go to the Subscriptions & Memberships section of your account. Under Manage Subscription, choose the subscription you’d want to cancel. Select the link under Advance Controls from the drop-down menu. The main subscription page will display. You can cancel your membership here.
Go to Manage Your Subscriptions. From the Deliveries or Subscription page, choose the subscription for the item you’d like to change. Then click Cancel subscription and Confirm cancellation one after another.