Faulty TV

I would like to take this opportunity to speak my heart out on the poor service that I received from Hi Fi corporation on the 04/12/2020. On the 28.11.2020 I purchase a Samsung 50inch television at the N1 City shop, I only had the TV for approximately 4 days and then it gave me problems. I made a video of the screening and took it back to the shop. When I got to the shop the manager Danie Van Vuuren assumed and told me that it is maybe a app error without looking at the product and that he will not be making an exchange for it. So out of my own knowledge I took the unit to Samsung and ask them to assist me and also showed them the clip that I have on my phone and they told me that the unit is faulty compare to a brand new television. I then contact Hi Fi Corporations customer service regarding this problem while I stood at the Samsung branch and the manager spoke to one of the consultants and told them that they must replays the unit for me. Customer service told me that they will come back to me with this matter within 24 hours which they did not contacted me so I had to contact them the following day. So I wasted my petrol to drive up and down for nothing. On Sunday the 06/12/2020 I contact customer service and requested a refund see that they could not assist me properly due to I bought the tv for my kids and no-one is coming back to me with any information. The 08/12/2020 Bradley from Hi Fi corp contact me and let me know that I can come collect my refund whereby I contact him numerous times and his response was that he was waiting for the manager Danie Van Vuuren to come back with the information regarding this transaction. I took the tv back and I arrived at the shop I request to speak directly to the manager, he came to me inspect the tv and said that there is no problem with it and I got very frustrated. Danie Van Vuuren was so disrespectful towards me and insulted me in front of his staff which is unacceptable. He also told me that if i take another TV that there is a handling fee involve which I did not know cause the time when I purchase it nobody told me about it or explain it to me. He Danie got so rude that he constantly told me he is not going to take the tv back, I was even willing to pay a extra R1000 for a different unit but he also refuse. I really want this to get resolved and then I will not go back there to purchase anything and regarding that I wanted to buy my son a laptop there but I think it will be a bad idea. I'm really disappointed for how this was handled, and to mention a friend of mine is also a employee there and his always giving people and myself a good service. Regardless what happen between me and him his own staff is also complaining what type of person he is and how he is chasing the customers away with his attitude. So I need someone that has the upper hand over Hi Fi Corporation to sort out this matter in N1 City before they going to loose more customers. Feedback will be highly appreciated.