Not getting the service I am paying for

Since last weekend all the premium channels are giving me a error message about the weather or my installation. This is the third if not forth time I am faced with this problem. I usually report it via Facebook to dstv and twice was this fixed by the technicians. I even recently paid another installer to do a realignment of my dish since they kept insisting that the problem is with my installation. What I don't understand is how is it that only the dstv premium channels are not playing at all but the compact ones are. My catchup isn't getting updated with anything recent. They claim it's the installation or my explora but then why are the compact channels not affected by all this? Does it not make sense that every channel be affected if it's truly is the installation or explora. My biggest frustration is now I am paying for premium service that I am clearly not receiving back. They will blame anything else for the problem that isn't the issue and force me to spend more of my money due to their incompetence. On top of all this the premium is going up and as it is now I have no idea what I am paying for?