Telefunken TLEDD55-FHD tv

@Telefunken TLEDD55-FHD tv. Bought this TV in May 2018 for R4999.00. This morning when i switch it on to watch the news, i was only greeted by a dark screen but the sound was coming our. It turned into a radio. i tried to switch on and off from the plugs but nothing happened. at times it just displayed Telefunken and went blank. When i left it for work i was not worried, but only starting to worry after reading the comments here. In my head, Game Store would never sell the potential costumers a useless product. I hope to find it in good condition when i get home. it is really disappointing and inconveniencing.