LEWIS COLIGNY SUCK

I bought a TV from Lewis store in Coligny, North West during August 2020. Not even 3 months later, now it's not working. I called them, as well as Lewis head office, but they're refusing to assist, without giving any reason, they tell me they can't replace the TV. I'm busy taking legal action now, because why am I still paying for something that is not working. Very disappointed in them!