Faulty Lenovo laptop sold

I am very disappointed with the staff at Game stores. My little sister bought a Lenovo laptop on 05 April 2021 and it started giving her problems from the onset. The laptop would not switch on despite the full battery. My sister sent it back to Game Store at Springs Mall on 04 May 2021 and the lady who assisted her at the store said she'll send it for repairs. It was returned on 11 June. a week later it started giving her issues again, it took over 30min to switch on or not switch on at all. On 27 September 2021 My sister returned to Game Store at Springs Mal the same complaint and asked for a refund and she was told that she must return the laptop at least 4 times for repairs before they give her a refund. The store assistant booked in in again for repairs and was returned on 03 November 2021. The laptop still had the same issue so my sister took it back to Game Store Springs Mall on 21 June 2022 and was told by Lebo Mnguni a store assistant that the laptop is out of warranty and therefore they cannot give her a refund.

I find this totally unacceptable as the laptop had been problematic from day 1 and the so-called repairs did not help at all and now my sister cannot work on her school assignments because Game sold her a faulty s**** laptop.