After waiting until 4:00 for someone to call and nothing happening, we called Expressvu again and repeated the story to another CSR. He said that we should take the dish back to the store and that there wouldn't be a problem. We called the store and the guy who answered said the same thing.
So we packed the thing into the car and headed back to the store thinking that was that. Big mistake, that was... We encountered the person who sold us the thing in the first place, who referred us to her manager. They refused to take it back, claiming we only had 15 days to do so and it said so on the bill. Of course, the bill also said that it was to be installed on a certain date, which it wasn't. So the boss joins in and wants to schedule another appointment - with the same guys who wouldn't install it in the first place. Long story short, he ended up grabbing the invoices, taking the dish back and screaming at us to get out of his store. All in all a wonderful experience, don't you think?
We called Expressvu after and the CSR said that since the store has the dish back we will not be charged for anything. I'm still going to be very nervous until I see my next phone bill and credit card statement. There was a 24 month agreement on the invoice, but the thing was never activated. The box was never even opened.
The only thing I will suggest to anyone out there is to buy these things online, deal directly with Expressvu, and avoid this kind of thing. I'm angry, I'm disappointed and I'm very hurt by what happened today. You sell a product or a service, then you better stand behind it, end of story.