When collecting the payment method, you and the agent confirmed that your card would be charged $158.98, which included the $99 upfront fee and first months charge.
You then gave consent to add Express Repair to the account. Which cost $7 a month. None of what was reviewed outside of that was misleading either. I hope this clears it up.
The $99 activation fee is something everyone pays and a fee that you were told about. Whether a phone rep mistakenly calls it an installation fee doesn't negate the fact that everyone pays a $99 activation fee.
Hughesnet it no way took advantage of you.