Phone records

Rickytb82 

As Mark mentioned, did you sign up through a reseller or HughesNet themselves?  HughesNet themselves doesn't offer a 30 day trial or anything like that.  The two year contract is valid the instant the service goes live.  

Per the "Residential Subscriber Agreement", which you can view here...

"If you cancel your order before installation, you will be refunded the amount that was collected at time of order. 

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 for 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. 
Further, you must return your HughesNet modem, power supply, and radio in good condition within 45 days of cancellation date or be charged a $300 Unreturned Equipment Fee ($100 for the modem and power supply and $200 for the radio transmitter)." 

If you signed up directly through HughesNet themselves and not a reseller, I'm sure that the reps will be able to have your sales call pulled for review.  Depending on what's found in that review, you may have recourse. 

One odd thing, though:  Do you have a Residential account or a Business account?  The reason I ask is that, at least with the Residential accounts, your high speed data allotment is continually refilled during your first 20 days of service after activation, so exhausting that data allotment in three days is very strange. 

If you do have a Business account, however, the reps here may not be able to help, as this Community is for Residential subscribers.