My property was not marked before burying cable, which resulted in damage to my inground pool plumbing

Thanks for reaching out to our Xfinity Community Forum @Jacqueline-a! I'll be more than happy to get a damage claim submitted for you.

If you could send our team a direct message with your full name, the name listed on the account (if different), and the service address associated with your account to continue.

To send a Direct Message: 

Ensure you are logged in

• Click the "Direct Messaging" icon 
• Click the "New message" (pencil and paper) icon
• The "To:" line prompts you to "Type the name of a person". Instead, type "Xfinity Support" there.
• As you are typing a drop-down list appears. Select "Xfinity Support" from that list.
• An "Xfinity Support" graphic replaces the "To:" line.
• Type your message in the text area near the bottom of the window
• Press Enter to send it.

@Jacqueline-a 

Person who buried cable, busted my pipes for my inground pool

Did you call 811 to have your yard marked before they came to bury the cable?  This is your responsibility so that any one doing any digging will not do what happened to you.  I'm sorry it happened, though.