Amazon Prime Video App Glitch Prevents Subscription Cancellation via Broken Links

I want to cancel my Amazon Prime Video membership, but I am unable to complete the process due to a system error. The SMS messages sent to me do not contain a working cancellation link; only asterisks are displayed in the message. Furthermore, when I click the "call me" option within the application, I receive an error during phone number verification, preventing me from processing the request.

I have been trying to cancel my account for about a day without success, which is causing me significant hardship. I demand that the Prime Video membership associated with my Amazon account registered under s****************@gmail.com be cancelled as soon as possible, and that no additional fees be applied during this process.