Refund policies

Hello my name is Reginald Letlhake,i got a bad experience in Game Potchefstroom. I bought a new laptop on the 28-11-2021,I was assisted by Tshegofatso Ximba on that day,now the laptop is giving me problems whereby it the battery doesn't last and the screen goes on nd off, i have less than 7 days with an item but the sales manager Burger Cronje is telling me that the laptop has to be send for assessment check because it has left the store but according to the policy(if you buy a ln item nd it gives u problems within 7 days,it can be refunded or replaced,so now i came with the same issue and i cant get help)but game policy says so. How do we trust game policy if the management cant resolve them