Can't access modem control center

Well, I PM'd the info, without response. But in any event, can't even work on this until my Hughesnet is back up.  After waiting 8 days for my service app't, the tech called to say he can't come [today] and rescheduled for Sat. when I have a conflicting commitment. No surprise, this is the same way I was treated when I first signed up. Both times, techs claimed they were not given the appointment information until a day or two before the appointment, so couldn't contact me sooner to reschedule. Then, what is the point of repeated texts and emails from Hughesnet asking ME to confirm the appointment? How about asking the TECH COMPANY to confirm the appointment??? (If history repeats itself, the tech will now show up minus the parts needed to fix the problem ...)