Multiple tries at a Damage Claim being cancelled without resolution

At the beginning of January, a technician came to my house to fix an issue that the whole neighborhood was having. It didn't have anything to do with my house, but when they were working on their lines, they cut my invisible dog fence in multiple places. I had to pay $380 dollars for the company to repair it and I need to be reimbursed. 

I am going to skip the hours I have spent trying to get a CSR to give me some type of help, but eventually I convinced a rep. to create a damage claim ticket for me. After two weeks, this ticket was cancelled and it says "RESOLVED". They called me once, didn't leave a message, so I called them back and got no one. I spent more hours trying to figure out why it was cancelled and eventually they opened another ticket.

This ticket ended in the same way. 

Last week I spoke to a male CSR who ACTED like he was really helping. Put me on hold for 30min to "speak with the people who ended the ticket" and when he claimed he "didn't believe the story they were telling him", looked up my local Xfinity office and put me on another 20min hold to speak with the manager. He came back and said, "I spoke with Joshua at the Beckley road office, he is the manager. He said "you need to come in to that office with the Invisible Fence receipt and Joshua, the supervisor, would help process the reimbursement." The story didn't sound legit, but I went in to the store anyway.

I was not surprised to find that there was no manager there named Joshua, and no one called because they do not even have a direct line hooked up at that store. 

I have a business card from the local Technical Operations Supervisor, Christopher [Edited: PII]. I have called him 6 times over two months with no replies. 

This is my last attempt at solving this through Xfinity before contacting Better Business Bureau.