Horrible service and no contact number to file a complaint or get a call back,

I called to resolve, and ongoing intermittent internet issue I use it for work. After calling and finally getting a human being after being pushed off on bots, I finally got a call back to what sounded like an offshore call center. After an excruciating 2 hours of being asked the same questions and seeing no progress, I asked for someone else to call me and to file a complaint as this is common. NO sir we have no way of calling you back, you will need to go through the process again from ground zero. Is there a way I can file a complaint, no answer, how about a reference number to the call, silence. Now my speed is even slower and cuts off, worst than before and told they can have someone come out in get this THREE DAYs, I pay extra for high speed for work reliability, so I guess I'm just SOL, no way to get a call back or escalate to a different tier of support, or way to get a call back from a supervisor. Not necessarily the agent's fault, this is by Comcast design, the old DMV, we will get to you when we want. Comcast, really you give your agents no way to escalate to have a supervisor try to resolve and no way to file a complaint. I guess your metrics for complaints must all be good...Interesting that you have a Compliments for Topic but no complaints...