### Answer
The "customer-did-not-answer" end reason indicates that the call was terminated because the called party did not pick up the call. This scenario might be occurring due to a misconfiguration or an issue with the phone number settings or the assistant logic. Since this issue involves Twilio as the phone call provider and is specific to your calls, it would be best to review the call setup and configurations, particularly ensuring that the assistant logic and Twilio settings are correctly implemented. For detailed guidance on call-related issues and configurations, you may refer to the documentation on [Call Ended Reason](
) [(1)](
) and [Create Phone Call](
) [(2)](
) . If the problem persists, contacting support with the call ID and related details may provide further insights and assistance.