misinformation by multichoice and then excuses

I purchased an explora decoder from a retailer at Fourways crossing who explained that as long as i had a pvr the explora would work. There would be no compatibility issues. I connected the decoder and it worked fine for about 3 weeks. Then the remote started becoming delayed i.e if you push to change a channel it takes a minute for the decoder to react. Eventually it stopped working altogether and jammed. I called the call centre who had me unplug everything. They eventually said it was a software issue and i must take the decoder to randburg for updates. Im here now and the staff here have tested the decoder and say nothing is wrong with it. I need to upgrade my dish and installation. But i was told it.was compatible? Not multichoices problem. Basically i must just spend more money upgrading my installation infrastructure. If i had known i would have stuck to the pvr