DPP Disgusting customer service

I accepted the R799 deal for the Explorer decoder on 17 December 2014. The decoder was supposed to be delivered to me a few days later. I was advised that the courier company (ON THE DOT) would contact me to confirm delivery. Instead they did not contact me and it was delivered to the wrong address. I finally received the decoder on 2 January 2015 only to find that it does not work as my complex has a communal dish and Multichoice neglected to tell me that this may happen. I phoned DSTV on 5 Jan to advise them that I had to return the decoder. I was contacted by DPP on 8 Jan (spoke to Lindo) to confirm this cancellation and I was contacted by ON THE DOT the same day to arrange pick up of the decoder. It took the courier a month to collect the decoder. In that month I was charged for the decoder that had never been activated. I did not pay this amount as I was advised by DPP that it would be reversed on my account. The decoder was finally picked up on 4 Feb. However since this amount still has not been reversed, my service keeps getting disconnected on my other decoders every 2 days. I have phoned DPP numerous times but i get nowhere. <br> <br> I'm extremely frustrated at this point.