Bad customer service

I bought a TV at Makro Ottery. The TV has since become faulty. I asked at Makro who advised they would get someone to collect it and gave me a ticket number. The TV was collected, the agent advised it can't be fixed and any feedback will come from Makro there after After 2 weeks of not knowing where the TV was i went back to Makro who said it's not their problem, i didn't book it in with them. (So how did the agent know to collect my TV?) I have since found out that it is with CN Tronics and in the last 2 weeks called them 52 times trying to find out where my TV was. It ranged from we don't work with ticket numbers, (so i got a reference number) to - not sure, can't find it, in the workshop, not in the workshop, will get back to you, please email us - just to give an email which doesn't work. As soon as they hear its me the call gets dropped. I no longer know what to do. is there anyone who can assist me