The Amazon Flex deactivation policies are designed to help you cancel your subscription and stop receiving services if you need to. You can deactivate your account by contacting customer service, or by going to the Amazon Flex website. To deactivate your account, you must first contact customer service. Customer service will help you cancel your subscription and stop receiving services. After you have contacted customer service, you can deactivate your account by going to the Amazon Flex website. To deactivate your account, go to the Amazon Flex website and sign in. On the left side of the page, under “My Account,” click “Deactivate Your Account.” You will be asked to provide your name and email address. After you have provided these details, click “Deactivate My Account.” ..