Smooth hits a bump

Okay, so most of time things are running smoothly, the trouble starts when it things don't. We bought a device, had it installed and tested it, that's when we realized that it does not work - because how else will you test an item without switching it on - right? Wrong, after struggling for hours to mail someone, because their complaint contact details are well hidden, and many many mails later, one assistant thought the complaint was handled, the other sent me a 'great' response saying that I can return the item, just pick a location. I agree, this sounds good, but after a lot of communication, they still did not understand - I had the device installed, by an electrician... How should i return the item? Who will pay for the installation of the faulty device, and who will install the new one or fix the hole in my house if I don't get a new device??? I mean, can they think about this for a second? Takealot should get a phone number and a few thousand people to answer it. The mailing system OBVIOUSLY does not work. 30 days to get absolutely nowhere.