I'm sorry to hear this.
If you press the The Menu/123 button on your Samsung remote does it not give you the DVR option there?
I got this TV about a month ago and set it up with my DirecTV Genie. When pressing the menu button I would get a menu on screen that allowed me to select guide directly or DVR using the Samsung Smart Remote. Something happened and now when pressing menu button I can only access TV buttons. There is no Guide or TV Button. I've reset the TV and set up remote several times. Nothing. I think it may have something to do with AnyNet, but can't seem to get that to work either.