The network cable is broken, find someone to answer it, saying it can't be answered. Let's negotiate with the property and open an outside line. What if the property is not allowed?

This has nothing to do with the property, just ask the broadband maintenance worker to answer. If he can't answer, ask him for their manager's phone number, put pressure on them to wear barbed wire or let their engineering team do it, and complain if they can't get it out to ensure that it can be solved.

I am also a telecom operator, and I don't think they are doing their best. . .