Payed the overall balance of my wifi bill instead of the overdue.

user_gf0fny Hello there! Thank you so much for using our Xfinity Support Forums to contact our team and we are happy to help with the over payment. To get started can you shoot us a DM with your name and address? Here's the detailed steps to direct message us: 
• Click "Sign In" if necessary 
• Click the "Direct Message" icon (upper right corner of this page) 
• Click the "New message" (pencil and paper) icon 
• Type "Xfinity Support" in the to line and select "Xfinity Support" from the drop-down list 
• Type your message in the text area near the bottom of the window 
• Press Enter to send your message