Dstv pricelock disappointing 82 year old customer

Dstv pricelock department contacted my father and he took out a contract with them and they knew he was 82years old. They sent the decoder a week later and there it stopped. They promised him installation would have taken place the 10th of December but nothing has happened. He is paying them every month since october for pricelock for a service he dont recieve. People have called me and made promises but nooooothing has happened. He is already 8months in his contract. The decoder is now standing infront of his bed and he is so excited to get to use this decoder that is sitting like a white elephant. Can someone please make contact on *** as we now feel they can rather cancel this thing that cant be installed