LG TOTALY NOT A GOOD BRANCH TO BUT AT ALL

Hi. My Name is Zoleka. I Bought an LG TV from Lewis Store in 2015 on credit and I am Still paying the TV but the TV last month just went Black No pictures. There is Volume; we thought its was Connections but we DONOT connect anything else except DSTV since I bought it. Called Lewis Guarantee expired September 2018. I then Called LG I must take it to the Just to check will cost me R300 then after they will tell me what is wrong and I must PAY. TV Did NOT Last NOT EVEN 5YEARS. LG 49 LF54OT. The TV is just now decorating on wall and it is so BIG. I may currently paying R870pm for it and and NOW it went BLANK! BUY SUMSUNG than LG. Even with my Cellphone I am correctly using a SUMSUNG CELL PHONE.