I've asked a Comcast employee to help you. You should expect a reply in this thread.
If you don't wish to wait for a reply: 1-800-COMCAST (1-800-266-2278) or 1-800-XFINITY (1-800-934-6489)
Hi Tamray07. I can assist with alerting our local Tech Ops team to repair the cut cable line. Please send me a private message and include your full name, service address, and account number so I can assist you.