Wanting to cancel

"Was told by chat reps before allowing the service to be installed that there was a 30 day guarantee on the service."

You were misinformed.  Please see the subscriber agreement: https://legal.hughesnet.com/node/771

"If you cancel after activation but before the end of your 24-month term commitment, you will be charged a Service Termination Fee of up to $400. The exact amount of the Service Termination Fee will be $400 during the first ninety (90) days after activation of the Hughesnet Service. Thereafter, the amount will decrease by $15 per month for each month of active Service."

The reps here will want to troubleshoot with you and see if they can make your experience better, but keep in mind that performance is not guaranteed. See the subscriber agreement:

"Stated speeds, low-latency and uninterrupted use of the Service are not guaranteed. Actual speeds will likely be lower than the maximum speeds during peak hours.  In addition, when connected to the Service using Wi-Fi, the user’s experience will vary based on the proximity to the Wi-Fi source and the strength of the signal."

Hopefully a rep will connect with you soon.