I got to them just by asking to escalate the issue.
Quick update in case it helps anyone. I have now been in touch with Corporate Case Management. He acknowledged that the infocenter page was misleading to anyone who is not "inside" Dish. Their position, as predicted by several here, is that the whole "reduction in service fees" on that web page applies to owned second and follow-on receivers. They're going with the argument that the content suppliers need to be reimbursed for the DVR capability on some receivers because users use that capability to skip commercials. So the "DVR Service Fee" is not the same as the "2021 service fee" referenced in the chart on that web page, according to Corporate.
They've agreed to do 3 things:
1. Fix the web page to make it clear what they're talking about regarding purchased receivers.
2. Credit my bill for $10 a month for the rest of my agreement period.
3. Offered to buy me out of my Hopper 3 at my purchase price, and then convert that box to a leased unit.
I'm good with 1) and 2). I haven't agreed to 3).
One of the benefits of owned receivers is the ability to turn them on and off. Anyone have advice on whether it makes sense to let them convert my H3 to leased? If I go out of town and don't care if I'm not recording shows, I could turn off my owned Joeys AND the owned Hopper 3, thus suspending fees for that period, I assume. I've sent an email back to confirm how turning off the owned H3 would behave in terms of fees during the OFF period.