poor quality tv

Bought a lg55 inch TV took extended guarantee after 4years the guarantee expired and a year after the TV went blank and no sound.Took the TV to joshua doors s/West where I was told to take to beccas TV repair.Result is the TV is unrepairable dew to the fact that the report state TV is unrepairable witch the plastic is still on.The report also states the backboard burned witch the board is connected to the screen.Beccas told me they can fix it but will plus minus cost R8000 witch I feel is unfair to buy a TV so expensive then it only last until the guarantee is up.i would like you guys to contact me on *** or at work ***/8 asap because I feel it's a lg product and I do have a few other products lg also in the same make that if it is then I can take it to you guys.Kind regards Rasheed Jacobs