Problems encountered with investigating higher speeds

As long time Comcast customer, due to lack of options really, I wanted to know about going to higher speeds than I have now, and costs. I did not want to click on Upgrade Speeds on the logged in webpage because it looked like I would be requesting something, rather than just checking out options. I would have clicked on wording such as "Investigate Higher Speed Options". I went online and had a half hour chat, was sent a link with proposal, but the link did not work, and I tried it in two different browsers. I was later told by another employee that those online prices are for new customers so a half hour plus of my time, and the employee time, was wasted because the employee did not know that page was for new customers. But the way I got to the knowledgeable employee was by insisting on talking to a supervisor, and a wait. I had earlier on, in trying to investigate whether my street has fiber optic or not (given that I get 50-60 mbs), I got tangled with the horrific Comcast automatic system computer voice. Why horrific? I will give you just today's example. It decided based on hearing my voiced words that I needed an update or reset to my TV box, even though I said No to that. Why NO? Because the Comcast TV box was returned to Comcast in about 2014! Then I called back, and the Comcast automatic system said I could not talk to anyone until my TV box was reset. Was it working, the voice asked? If I said Yes, I falsely confirm that I have a TV box, and if I said No, maybe a longer delay. This is entirely typical of my interaction with Comcast over the last 30+ years. I really have no viable alternative, despite being in a major metro City limits. The word for that begins with "m". But I can't figure out why Comcast can't do much better with customer communications. It is a disaster on three calls out of four, taking up vastly more of my time and their employees' time than is necessary. This mystery continues. Crazy-making, highly stressful, and time-wasting for all are words that come to mind...