Hi, Jo2141 - You can find the steps to view your billing history here: https://www.xfinity.com/support/articles/viewing-your-bill-online-ecobill. Please let me know if you need any additional information.
Jo2141 -- We do not have an area where you can view payments only. Each bill does show previous payments made along with the date they were made on. This would be your only option for tracking payments.