Quality (is it durable and worth it's price/or just an expensive product with a desh of horrble customer service

My Mother bought a Samsung TV UA49N5300 49 (124CM)FH This tv was at a cost of 5600/6000- and was bought at OK Furniture (Stanger) on or about 2020/02/03. I advise of the time so we can question the quality. So when the tv got home it was mounted on the wall without any interference at all and the only person at home was my mother than about a few months later it starting showing a mark and we called to enquire about this mark but the shop was unprofessional and advised the tv was damaged due to physical damage and was out of warranty (this was way before they could take it in and check what happened to the tv). The first question was, is this tv brand new from Samsung (were we sold a second hand tv) or the quality of the brand. These questions linged in my mind as it felt like a **** cause before we can determine, warranty or factory fault we first send tv to Samsung to check but this was not done and when eventually they agreed o take the tv in to be checked on the issue of picture display. When the response came back is was a letter stating what they had advised us before we could send it in. My mother would know if the tv was damage by her as she is the only person in the house using the tv as there was a lockdown when it starting giving us issues. I challenge Samsung as a brand cause now this is a reflection of the brand as they don't have a process of goods bought. i feel even the customer service for Sumsung favours the suppliers of which is unfair, Spoke to the Sumsung customer care and the lady told me they are under lock down and wasn't even able to answer any of my question nor advsise me on matter I had asked about tv . Not a single question nor help given. I don't know whether its OK/Samsung customer care that should fix this matter. TV WAS EXPENSIVE TO DIE WITHIN A SPACE OF 3MONTHS . We still don't know how it was physically damage!!!