Poor product and I can't cancel service without HUGE fee

I signed up with Dish Network to save money. The problem is their product and their service is sub-par.  I was told by the sales representative that I could have an entire house hooked up, with one receiver and be able to record multiple stations at once, and control it all from one device. A whole house system.  When they installed it, it wouldn't work, we had to change the type of device.  It wasn't one control for the whole house, it is two boxes that don't hook together.  I can record two things at once, but I have to be watching one of them to record two things at once.  They can "upgrade" me to a different device for an additional fee, but that only records 3 specific channels that they choose and two others of my choosing, one of which I have to be watching to record it.  So, really the same as without their upgraded system.  THEY DIDN'T TELL ME ABOUT THE LIMITATIONS OF THEIR PRODUCT! They purposefully misled me to believe I could record 6 stations at my leisure and didn't mention these limitations when I inquired about their product. So, my recording options are seriously limited.   I would like to cancel their terrible service, only now I am stuck in a 24 month contract, and I am only two weeks into the contract.  With any other product, if I don't like it or it doesn't perform as stated, I can take it back.  I think that cable/dish tv should be the same. Even if I only tried it for 1 day, I would still be unable to "take it back."  Of course, they didn't tell me this when I signed up either.  It is a scam, of sorts.  They tell you it will do all these wonderful things, then you get the service and it doesn't perform according to what they say.  They try to sell you further options to make it what you expected, but it still falls short and you are then stuck in a contract.  Help!! I don't want money back, just not to have to pay the early termination fee.