Middelburg Hi fi Corporation' pathetic no service from branch manager

I bought a smart vu tv box from hifi corporation Secunda I phoned the branch within 14 days after I purchased the item and spoke to a lady who said that yes because it's in its warranty period I can bring it in and exchange it. This item gets extremely hot and I was afraid that it might catch fire, because it gets so hot. I then went to Middelburg hi fi corporation where I explained to the assistant at the counter that I reported it within the permitted time frame. He then phoned his branch manager Zelda who I heard speaking on the phone that it was her weekend of and she doesnt want to speak to me where I wanted to explain that I did report it in my telephone call. As my right in the Consumer protection act you do not honour your claim that you would provide the best customer service. Who will pay for the damage if if causes an electric fire? Hi fi Corporation Middelburg you do not adhere to the customers need. I would really appreciate the help of a regional controller as there is no support from your branch manager Zelda. Not a good review for the JD group. Adré