Customer's concern

Good Day

My name is Marcia ,I bought a laptop at game on 29/05/2020 for R3500 called ilife. I used it for a week then it started giving me the power problems it just started going off anytime even when the battery is full.then I took it back to the game store @Jubilee mall hammanskraal where I was told that they do not exchange or refund laptops as it is technical thing but thy can only do repairs which is guaranteed to take 21 working days after submission ...i left my laptop at the store from June until now and nothing is happening when I go to enquire they were complaining about how slow the system is and I understood I went for the second time and they complained about how the process of repairs has changed due to covid so my concern was since well the repairs people are working in this pandemic how come they don't know which process they are using because everytime I go I don't get a proper feedback and that is affecting my school work alot as am already struggling alot doing mny things with my phone. Please help me to get my refund or another laptop as it was still brand new and I don't see how is it my problem as a customer.

Regards Marcia