Request for refund /exchange from Game and Asus

I bought a laptop from Game on the 22nd January 2022 and it stopped charging on the 5th April 2022. I asked for the money back on the laptop as it was a technical problem but I'm told they can only fix, but how do I trust a laptop that broke after 4months of being in use? My brother is at university and was unable to complete school work because they took the laptop. Asus please assist with a voucher or a new laptop.