Disappointed at Game Stores

On the 5th of Sept. we bought a TV at game Clearwater 55cm Telefunken,TV was checked and confirmed to be fine,but when we got home there was something that looked like a crack on screen but when checked its not a crack it looks like ink we returned the TV to be told that we are liable for it,I phone the head office was told the same thing,I sent emails to game service,I recieved the response requesting the slip and it ended there,I sent a follow up email but no response still,and this thing is expanding,so we waisted R6000 on a broken TV,how are we to repair this thing because it's like buying a new TV,so we gonna be sold staff that are not in good condition just because they put a stamp on it we must be liable,,Am disappointed at game and the way we being treated.