3rd Complaint in 1 month. Pathetic Service all round!!!

This is the 3rd complaint I am logging against DSTV within 1 month. This is the only way in which anyone will consider assisting me. NO Installation was done, the decoder was just plugged in. Now i am trying to plug in the 2nd decoder which i purchased and am getting an error. After calling the call centre I get told that new decoders will not work with an old dish and needs the new installation to be done. HOW THE HELL DO I GET SUPPORT FROM DSTV!!! This is so frustrating. Delivery issues, installation issues, connectivity issues, pricing issues.. Only issues with DSTV!