Explora Installations

We app**** for a DSTV explora with DPP and the application was done swiftly. They delivered it and it was not installed , we have tried to get the installation for over a month and still no one came. The explora is just sitting in my house and I am being billed for it and my current PVR that I have. The call centre tells me that I have a voucher for installation and was supposed to use it. How was I suppose to use it if their installer don't come to install. I am currently paying a service that I don't use and the package that I took included installation and that is not done. I want my refund for the incorrect billing <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br>