In efficient installation

I had a 2 year contract with DSTV guaranteeing a price lock. The contract has come to an end and I decided to renew it. I was told I would get a new decoder and dish as part of my contract. My original dish was for three computers but as I now only have two said I wanted it for 2. The company to fit the decoder came and told me my decoder was for only one tv and that I must use my old one for the other tv. No one knew why this was a change. I didn't have much choice so agreed. Then was told I had to patY for two insurance contracts. DSTV is very expensive so I couldn't pay 2 insurances. So agreed to pay for the one only. It is not convenient to have the old decoder next to my second computer cause I now had a tv, a decoder, a telephone my electricity meter all on one desk making the desk unusable for anything else. To add insult to injury the decoder will only give me Telemundo cause it hasn't been connected correctly so it doesn't work efficiently. I was also given a phone call to again ask me to pay two insurance policies a waste of money cause I never claimed once in the two years. Please help me to at least get the old decoder working properly.