If you need to cancel your Cricket Wireless service, you can do so by contacting customer service. Customer service can be reached by phone at 1-800-274-2538, or online through the Contact Us page on the Cricket Wireless website. When cancelling service, you will need to provide your account information and reason for cancellation. You may also be asked to confirm your cancellation with a password or PIN. Once your cancellation is processed, your service will be discontinued and you will no longer have access to your account or data.