Inferior quality goods and pathetic service

My 4 year old smart tv just went blank but has sound. I logged a call and was told their warranty is for 3 years. They referred me to an 'accredited' repairer who drove 300kms to where I am with no spare remote. She fiddled with the TV and could not fix it. She told me to buy a remote and let her know once I have it. I've been nagging her to assist me and she's been ignoring me. My Mom has a Samsung TV she bought 10 years ago that still works perfectly fine. Hisense on the other hand sells inferior quality products that don't last even for 5 years, then accredit people who have no clue what they are doing and who don't give a rat's ass about a customer. Come and fetch this useless expensive TV from my house!!!!