Why this happens
Amazon offers country-specific membership terms and management pages. The account currently open in your browser is therefore only a starting point. If it shows an invitation to join while you have a receipt for an active membership, compare the marketplace and login before assuming cancellation is unavailable.
What to do
- Read the Prime receipt for the issuing marketplace and the email address associated with the purchase.
- Open that marketplace directly, sign in to the matching account and locate Prime Membership under your account settings.
- Use Manage Membership and follow the end-membership flow through its final result, recording the effective date.
Check the result
If the paid membership is still missing, use support on the receipt's marketplace with the transaction reference. Creating another Prime trial is not a way to locate the existing contract.
Official sources
Check the linked provider instructions for your plan, country and purchase channel. This independent guide does not cancel a subscription for you.
Full Amazon Prime cancellation guide