Don't waste your time

Been a customer for about 3 years, monthly premium of 2300, 4 months ago bought another TV Hisense 50 4k and Ps4. Since the day I received the TV, it has been faulty. It has gone in twice now and comes back with the same problem. Power doesn't die but screen goes black. This occurs with or without connected devices, especially if a scene is a darker color. I have called and called, and emailed and emailed, and every time they say they going fix it by swopping it out, they get sales to call me, who in turn gets dissatisfied that it's a swap out and not a sale. I called them again last week to discuss and managed to get through to Courtney who is in technical. She promised to call back but still hasn't. My TV is still broken. I have discussed with my lawyers, and you can expect a lawsuit as this is in direct contravention of the CPA.