$30 Discount for 6 months

About a year and ahalf ago, I had planned on canceling this service due to poor customer service and quite frankly very slow internet speeds.  Living in a rural community I have no other choice as this service is the best bang for the buck when it come to satellite internet.  I was offered a $30 discount for 6 months to hang on the this service, so of course I took it.  My internet speed is the 4g 10gb a month and was even given an extra 5gb a month to sweeten the deal.  My initial bill before the discount was around $77, with the discount a whopping total of $47 and some change.  This happened the first month, well the very next month and every month after that, my bill would come out saying that I owed right around $100 some odd dollars.  I would call back and explain to multiple agents as well as their "supervisors" what was going on, they would promise an additional 6 months and that the issue would be fixed the very next month.  Here it is going on almost two years since I have had the discount, in which I have had to call each and every month, in order for them to honor it.  The agents act like their doing me a favor, when they "credit" my account the charges that hughesnet charged me.  I asked them not to call it a credit but to just fix the issue that they have caused.  I am told each an every month that the issue would be resolved and this is the last 4 months that this discount will be given, as if their punishing me for their fu&* up.  I have lost countless hours on these phones calls trying to get it resolved and have fill out their multiple surveys.  Would like to see if someone on here can get this resolved....