Xfinity is Unreliable

I have had xfinity for almost 5 years, but in the recent years xfinity has been increasing terrible! There has been several outages and I am on a very high plan yet I still get internet latency issues which is unacceptable since I work from home. I have spoken to an xfinity customer representative multiple times to have it fixed and nothing has changed. I decided to finally switch my internet provider and come to find out there is a $190 "early" termination fee. I did not even know I was under contract! If I am canceling a service and there is a termination fee, the representative should be informing me about these charges upfront before I attempt to cancel. After being an xfinity customer for at least 5 years, it is absurd that I am considered under contract still and hit with this fee?? Additionally, when I try to log into my account and look at my billing to view the charges I get through with a 400 error" 400 Bad Request, Request Header Or Cookie Too Large". I need someone to help me access my billing so I can pay and be done with xfinity and move on with my life. Complete terrible customer experience with xfinity.