I tried. Here was DIRT's response:
comfortably_numb,
I do understand you want to cancel your DISH service and we never want to lose a customer for any reason.
For the ETF that will usually be charged on the account. When dealing with a cancelation or disconnect of an account we ask you the customer to speak with our Account Specialist.
We prefer that you call us and allow us to review all of the options available to you. You can reach an account specialist at (888) 496 – 1260, who will personally handle your request and ensure that we cover all of the necessary information needed to cancel your account.
Thanks
So I called the number and got somebody in Pakistan who had no clue about anything.