Unhappy customer

I bought a DStv Explora at Game stores early November. In the second week of November I called Ellies as indicated in the explorer box,gave them the voucher and serial number. They advised that someone from their office will call regarding time and date they will be coming to do installation. Weeks passed and there was no call, I later called on the last week of November to follow up, was again promised someone will be in touch...still nothing I called for the 3rd time and when informing the Ellie's that I called for the 3rd and I'm seriously annoyed and frustrated by their lack of customer centric behaviour she told me that the call was only logged on 19 December, I told her that was when I was making another follow up call, and her answer was " so is the system lying".. that was very uncalled for and unprofessional. Till this day no one from Ellis came for installation,not alone calling me. That's very appalling . DStv must not have. Voucher option if Ellis is this pathetic