I'm having a similar issue. I found out recently that they changed the plan on me again, so some of my favorite channels are in a higher package. Additionally I'm trying to get rid of voice since we no longer need it, but I've been scouring the website and have not seen a way to remove just the voice option without affecting the rest of my package. When I click on the option to manage voice under services, it does not have any option to remove that specific service. And when I select on the option to change plan, it only shows me packages with voice included, and no results when I set the filter to only show me tv and internet.
Then in addition all the other packages (whether more or less expensive) have less mbps than my current one does.
I don't remeber it being so difficult to edit my services.