Bad Service

I bought a dstv decoder and satellite with free installation from Pep store Arcadia. They gave me a number of an installer and promised that they sent my details to the installer, he will contact me. On Wednesday, when I called the guy he gave me somebody else's number, I called that person, he gave me another guy's number, I called the third guy he referred me to somebody else, I called the store and I was promised they will sort it out, been trying to call the store???? phone be answered by rude lady who refuses to even give me her name. The guy who was helping me is constantly not available. Can Multichoice(dstv) please intervene.