Your mailing address so I can send a check for$268.35

The concern is not "X1" help related. Topic moved here to the proper help section, and for greater exposure to Comcast corporate employees (The Digital Care Team) for assistance. 

Thank you for choosing Xfinity and joining the forum community, user_g2qxdo. You can mail us a check drawn on a valid U.S. bank account or a cashier’s check issued by a valid U.S. bank. Please use the insert included in your Xfinity bill. Never mail cash. Other ways to pay include:

• Say “Pay my bill” into your Xfinity Voice Remote to open your account and pay on Xfinity X1.
• Call us at 1-800-xfinity and follow the automated prompts to pay using an American Express, Discover, Mastercard or Visa credit or debit card or an ACH transfer from a valid savings or checking account with a U.S. bank.
• Visit an Xfinity Retail Store to pay using one of our Xfinity Self-Service Kiosks, which accept the payment methods listed above, plus cash and traveler’s checks.
  • To find your closest store, including hours of operation, visit our Find an Xfinity Retail Store locator.
• Visit a Western Union Quick Collect location to pay by money order.