In the event you somehow missed the very large notice at the top of the community...
Hughesnet is overwhelmed with support calls, as an entire satellite has gone offline. Any credit you get back, will be minimal as it would be calculated based upon total duration of a system wide outage. You wont be getting much if anything, trust me.
Knowing Hughesnet, they might credit customers for a day of service if it's out long enough, or give them extra data as a good faith gesture. However, that will require the outage to be rather lengthy in time.