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Go to www.amazon.com and sign in to your account. Enter a valid email address or registered mobile number to access your account.
Hover over “Accounts & Lists” and click “Your Memberships and Subscriptions.” Under MyAccount, you can find your orders, watchlist, Kindle Unlimited and more.
Select “Kindle Unlimited” from the list of your subscriptions. Kindle Unlimited gives you unfettered access to millions of ebooks and audios.
Click “Cancel Kindle Unlimited Membership." When you cancel your membership, Amazon will stop billing for Kindle Unlimited.