Cable locate service

I chatted with an agent last week, and set up an appointment for someone to come and mark the location of my cable. I am putting a shed in the back yard and need to know where all underground cables are located. After a long time fighting with the xfinity assistant, the most frustrating bot ever, I finally connected with a human agent. He set up an appointment for someone to come and mark my cable location.

They were supposed to come today. So far no one has showed up. So I tried chatting again. This time the bot kept refusing to connect me with an agent. It said it could not do so because of an outage in my area. Yet I was not experiencing an outage, and was literally using that very xfinity connection to chat. Nevertheless, the bot kept refusing to get me to an agent. At one point it said I had no appointments on the schedule.

I tried calling on the phone. All I got was the recorded message with nested menu options. It kept telling me I had to wait until the outage was resolved. Again, there was no outage. Then it rather unceremoniously hung up on me.

If any xfinity personnel can look at my chat history, they will read where an agent was supposed to come today. No agent has come. My main purpose in posting is:

1) to find out why no one has come, and to get them to come ASAP and mark my cable's location.

My secondary purpose is:

2) to say that this system is extremely frustrating. The human agents are surrounded by a labyrinth of technology, shielding them from customers who need help. This labyrinth exists on both the phone and the chat bot. Please fix this. I am actively looking for another internet provider.