You have a right to get angry if you're not satisfied, but the reality is that the salesperson is there to make a sale. They're not the Shell Answer Man and make marginal claims all the time. Doesn't matter what business, they all do it.
If you ask any salesperson a technical question, 9 times out of 10 they're going to give you an answer off the top of their head or just answer "yes, of course" because it's positive and helps the sale. It's very likely they didn't understand the technical specifics of the question in the first place. "I don't know" seems to be a bad thing to say by anyone these days.
That all said, HughesNet is actually doing the right thing and requesting sales calls be reviewed to see if they were explicitly misleading and dealing with them on a case-by-case basis. They don't really have to do that, although that's really a good idea, imo.
The user was also ranting (and being insulting to BirdDog at the same time) on a very old thread. I wish these old threads were closed.