Xfinity Stream app

I am completely losing my patience with the Xfinity Stream app. All of my TVs are smart TVs and for a couple of years now we have been using the Xfinity stream app. I have been patient, hoping that they would improve their app. But it is utter trash. Now the latest update has made it so whenever I click on a regular HD channel in the hundreds, it automatically takes me to channels in the thousands. On top of that it is always having audio issues and video streaming issues. Why is it that when I watch a football game on prime which still runs on your Internet  it is much more clearer than any of the stream broadcast that you have. This is absolutely unacceptable especially as I pay almost $350 a month for your services. What are you going to do to fix this