Agent issue

I have been having Internet issues since Sunday. I replaced the modem and extender. I ran a new coax line from my wall to the Xfinity box. I am still having issues and have now missed 3 days of work because I work from home. 

Today at 6:57 a.m. I chatted with an agent. [Edited: Personal Information]. This agent offered an appointment for the 8th, then told me a priority spot was open for today between 5-7 p.m. The agent said this appointment was scheduled. It is not and the supervisor couldn't pull the chat for "privacy reasons". 

I work in digital chat for another company. Supervisors can pull our chats at any time. The supervisor Priya also said there was no one above her I could speak to. 

The problem is your agent lied. Then I took that information and lied to my boss, saying I had an appointment for today. This is unacceptable. Again, I have missed several days of work because of this. There was absolutely no resolution. I can't believe your agents are allowed to just lie to customers. 

I'm about to cancel and go with [Edited: Soliciting]. The supervisor said my only option is to go to an Xfinity store and they can pull the chat. 

I have no way to get there, the nearest store is 6 miles away and I can't drive. I'm in Florida, walking 6 miles in this heat isn't an option just to pull a chat. I need this escalated to corporate.