Read the disclaimers included in the subscriber agreement and on the website. Speeds and performance are neither promised nor guaranteed, as they depend on way too many variables, including many that are on your side of the equation. You are paying for a service that works within certain (and somewhat limited) parameters. You seem to have unrealistic expectations for the service.
Since this is a tech support site, why don't you ask for tech support? Seems silly to pay all that money and not try to maximise your service. For all you know, your dish needs alignment, but if you don't ask for help, you will never find out. To ask for tech support, go to the tech support section, click on the blue button labeled "start a topic," and explain the issues you are experiencing.