Data over usage

I am getting alerts all the time now saying that I am going over in data charges. They have charge me $70 a month for this. I have called customer service and have chatted online to multiple people and have received no answers. Where are the daily reports of our home usage. I see the graphs for monthly use and the numbers only but how are we to monitor ourselves? They told me to download the app, I would be able to see daily reports but nothing. So is this another way to charge customers more money by telling us we are using more data but not letting us seeing where or how to change on our end. We have been using the same since Covid and now that everyone is back to work and school somehow I am going over. Anyone, figure out how to see your data usage or did they just change sevices? I don't want to continue with chargers nor change plans to pay more monthly for something that is seen on Comcast end only.