Ongoing failed repair queries

I submitted a request for an issue I'm experiencing on a TV less than four months old on 12 September. I was advised a technician will contact me within 48 hours to arrange an appointment. This was not actioned. I followed up with LG 08h30 on Friday 23 September and was informed a technician could not contact me and the booking was "called". No voicemail, text or message of any kind advising me. According to LG a technician could only attend to my complaint on Monday. This also was not actioned. This morning, after yet another follow up, I was informed of LG's "sincerest apologies for the concern I am facing", and I can expect a technician's call out today. Repeated disappointment. After the third failed attempt to have my issue resolved, I am wondering what is required for a consumer to receive service?