Please see my reply to your post in the MyAccount & Billing section.
Additionally, HughesNet is satellite internet. It has a much more restricted throughput than ground based services. It is the most expensive form of internet, per capita, to provide. It's also the most complicated. HughesNet simply cannot offer unlimited plans, as the infrastructure in place won't support them.
It is not designed to, nor can it, compete with ground based services. It is a niche service. HughesNet provides internet service where others can't or won't, but that doesn't mean that the services are comparable, and they can't be, as explained. Think a 20 lane, divided, autobahn type highway vs a two lane country road.
Lastly, you can cancel Express Repair.
One should always research a product or service before purchase in order to make sure it is going to fit his or her needs.