According to Comcast's Contact Us page, company agents are available at 1-800-XFINITY, which translates to 1-800-934-6489. The line is open 24 hours a day, seven days a week.
Comcast provides other ways to obtain service or information through the Get In Touch section on its Contact Us page. The location of service centers are found by clicking on the Find a Service Center button. A Chat With an Agent button offers a live Internet chat. This covers a wide range of issues, such as discontinuing or moving services, paying accounts and solving problems. In addition, the contact page has a link that connects to customer forums discussing topics that include billing, the Internet and TV service.