Bad Service, No Accountability

I bought myself the OVHD decoder. When I bought it, the shop I bought the decoder did not have the installation voucher and I therefore went to one that does. I called Ellies on the 29th of May. I gave all my details and the lady said 5-7 days for installation, after the call we will send an sms to verify. Now on the 7th I call at 09:04 and ask what happened to the installation, its already 7 days excluding the weekend so what's going on? The person tells me her system is slow and she will call back, 13:00 I call because I still had no call back. I call the 086 101 099 number and I am now told to take the Cape Town number where I stay because she cannot help me. I call Cape Town, and they tell me it was never logged they will send someone today or tomorrow. 10mins later I am called back and told my voucher number and the set box number doesn't match, I must go back to the shop I bought the stuff and ask them to make it match??And because it doesn't match if the installer comes to my house to install it, they won't get paid ?? Now how is this my problem, I just bought the product and need someone to install it. Ellies is messing me around and I spent money on stuff I cant use.