LG Warrantee a Marketing Tactic

I purchased a LG 25” Computer Monitor in August 2018 (25UM58-PBFB – S/N: 805SARL06574) , after a couple of months, it started “going black” after 30 minutes of using it. On the 22th of February I took the screen to Xecutronics in Edenvale (official LG service centre), on the 26th of February I went to collect the screen with a note to the supplier to exchange the screen, as the part required to fix it (EBU ********** 9) is unavailable. On the 1st of March, the screen was returned to Evetech (in Pretoria), from whom I bought it. They returned the screen to Pinnacle Technologies, who after a week referred Evetech to Corex (in Pretoria) with whom the screen currently resides – it is now almost two months and I am wondering if the 3 year warrantee is a marketing tactic by LG – I really expected more from them and their official service centers.