Solved! Go to Solution.
Maybe you just need to purchase your own modem (without WiFi and saving $$$) instead of using the Comcast provided gateway device. Have you done a Forum Search for 'disable wifi' to see what posts are there? There's an interesting one at https://forums.xfinity.com/t5/Internet/ANSWERED-How-to-Disable-Your-XFINITY-WiFi-Hotspot/ta-p/294116...
and a corrected link:
Ok thanks, I will take a look, I WAS able to turn both off, not blinking eitherr, by turning them on, the back off again, still not sure of the order between 5ghz and 2.4ghz order, but I was happy to disable it EVERY month.
Now the browser don't do a thing.
Oh, and, going through their website has always been disabled hotspot.
Your second link goes nowhere , no page just says no topic.