I keep getting messages in my xfinity app that my gateway can't keep up with my internet speed

I am frustrated in getting any assistance. i am consistently unable to join work video calls from my laptop because of internet connection issues from my home office and the times that i don't have video issues, the moment i try to share my screen it starts having connection issues. on my xfinity app i keep seeing messages saying it's time to update your xFi gateway because the current gateway can't keep up with my internet speed and that this will be done at no cost. when i attempt to start the process in the app update gateway, it ends with no resolution because i reach a screen that says page not found. when i call into support there's no getting passed the automated voice that walks me thru the same TS steps i have taken dozens of times and never puts me thru to a live person. i have even received message in past that a new gateway will be shipped but then i get no confirmation of said shipping and nothing ever arrives. the gateway was replaced last Fall so not sure why i didn't get one that would keep up with my internet speeds at that time. the tech that came out and replaced the gateway that stopped working also said that i can call into support and request free pods to help with any dead spots around the house but of course, there's not getting anyone on the line. i can't continue as a customer without having these issues immediately fixed. what is my next step from here??