Sales call review

I would like a rep to do a sales call review on my account. I was told we would have no problems streaming video and all it does and has done from day one is buffer. It takes us 3 hrs to watch an 1 hr to 1 1/2 hr movie or show. It doesn't matter where we are in our monthly data allotment it buffers and it doesn't matter what definition be it High Def or Standard Def it buffers. It also doesn't matter if we try during normal hours or during bonus hours it still buffers all of the time. We lose more data buffering than actually watching anything. We even use a wired connection and the connection constantly drops in and out. We use an Amazon Firestick 4k and never had this issue with Frontier when we had them in Iowa. When I go to my network settings it says I have excellent signal but no wired connection and if I switch to wifi is shows excellent signal but no connection.
We also get pop ups if we turn the wifi on using our phones saying wifi unavailable yet it shows excellent signal. I am writing this using my cell phone's data because after at least a half an hour of trying to connect to this site on wifi I gave up.
Like I said, this has gone on from day one and that was well before this COVID-19 crap started. We are definitely not happy and very disappointed. We would have been just as well off getting Centurylink @ 3mbps because this feels like the old dial up. If I had known it was going to be this bad, I wouldn't have gone through with the order. I feel we were misled by the salesperson on what we were getting and now we ate stuck for almost two years with crap internet and can't stream anything.