Lg complain

Good morning my name is mogadi I bought a tv last July at makro crown mine, the tv is a 82inch lg it was in special at R22 999 excluding delivery, this year the tv started switching off while I’m watching but u can see the volume can go up amd down coz it doesn’t completely shut down, a technician came twice ti fix this problem the lst time he came the tv did the same thing and I immediately call as I was doing every time it started acting up it’s like they dint take me serious as a customer coz what will happen in the long run when the guarantee has ended? It means I’m gonna have to fix it from my pocket so I’m tired of complaining I want my money I dint want their tv anymore coz they failed to chang it and give me a new one, so pls help me get my money coz I can’t pay that much and watch a tv themat switches of, I have videos and conversations for all this my number is ***, the technician that came is Sifiso Gabriel Mkhize amd I’m not happy at all I reported this in the beginning of the year and now it’s may still so please help me.