My Data Usage bug

It happened to me a couple months ago. Keep escalating your complaint to the next tier. Eventually a tech came out and replaced the drop and replaced things in the box on the outside of the house and I switched out the modem for the panoramic one. It seems to have solved the mystery data usage, although the service right now is almost unusable. My phone is unusable. When we experienced the crazy data thing, I looked at the modem thru the browser and it had hundreds of uncorrectable errors. Higher level support thought these errors had something to do with it. I can barely get a web page to load, so for sure I can't stream anything. As I type this a little box popped up saying I have gone offline and attempting to reconnect. I pay $140 for phone and internet which is useless to me. My paid subscriptions to Hulu, Netflix, Prime etc go unused. Has Cox invested any $$$ into it's infrastructure? It's pretty lame to blame all their problems on increased usage due to covid. We pay for a service and it should work regardless of the number of users. They are the only high speed provider where I live. I would leave if I could and I'm glad I switched my tv service to satellite. I did that because of poor performance with the internet, so the line is dedicated to only the modem with no splitters or boosters.