Explora and extraview do not work

I entered into an agreement for the Explora and DSTV Premium at a fixed rate of R899 for 24 months. The equipment was delivered on 29 January and installed by the accredited installer, I received the installer's details from Multichoice.<br> <br> The installer also moved my old decoder to my bedroom and I paid extra to have it set up as an extraview type system.<br> <br> The decoders do not work if both are on at the same time and I keep getting an E48 error saying it's bad weather or installation. The installer came back on the 1st of February and said it a problem multichoice should fix. At the moment I can only watch anything stored on the decoder and not live TV, every 30 seconds the above error comes up.<br> <br> I have called multichoice several times and the consultants tell me to switch off the decoder and remove smart card and/or reset the decoder- this does not work. They then refer me to the installer.<br> <br> I am not sure what to do because I now have to pay this R899 for 24 months and yet I do not receive the service.