Tech appointment

Last night I discovered that my cable outlet was faulty. I did this by connecting my modem to the outlet and it never got to the white light and so were were offline, but when I returned the modem to its original outlet it was fine.  So I spoke with an agent after enduring the inanity of xfinity assistant.  The agent said he set an appointment to have a tech person come to my house tomorrow (saturday and that I would he a confirmatory email soon).  I waited and waited.  I got back on chat and said I didn't get it.  The agent said he was talking to tech support and I should get it soon.  It never came.  It was not in my mailbox this morning. I got on chat and after being bounced around for a couple of hours between different agents, who all told me the same ting, that they were talking to tech and I would be a confirmation email soon, they finally admitted that I was not on the schedule. So I was lied to. Repeatedly.  I finally got a confirmation on the Xfinity app saying that the appointment is for Monday, not tomorrow.  So I have questions, like how do I get my appointment which was promised to me for tomorrow, and (ii) what consequences are there for the agents who all lied and [Edit: Language] around for hours???  And when I asked that the matter be escalated, they agent said he would but did not.