HughesNet is the worst internet service I have ever had.
The reps make an educated guess as to how much data a person will need, but due to many variables it's not always right. You may be able to upgrade to a larger plan to fit your needs.
With this said, though, HughesNet isn't made for cord cutting. It's a niche service that's primarily for people who can't get a ground based service. Not to rub salt into a wound, but it's very important for people to research a product or service before they sign on the dotted line, so to speak. There's no doubt that you would have been better off sticking with your cable service, as satellite internet can't really compete with a ground based service.
However, if you feel that you were misled by the sales rep, you may have recourse. Since it's been less than three months, and if you signed up directly through HughesNet (not a 3rd party reseller), your sales call may be available to be reviewed. Only the sales call itself can be reviewed, so the misinformation must have been during that call. The sales call reviews are very honest, and if it's determined that you were misled you may have recourse in the form of being able to cancel the service without an Early Termination Fee. It all depends on what was said in the said in the sales call. I'm not guaranteeing anything, and I'm only a fellow customer, but it may be worth asking for your sales call to be reviewed. You can do so in the "myAccount and Billing" section, or directly through this link...
https://community.hughesnet.com/t5/forums/postpage/board-id/AccountandBilling
Good luck.
Edit: The weather. Yes, bad weather at your location can and will affect your service, as can bad weather at your gateway location. All of the gateways are located in the western half of the country. It's one of the unfortunate drawbacks of all home satellite service, including satellite TV.
