Bad customers service,I need my computer to be fixed

I bought a Mecer Intel Celeron laptop at Game Belabela last year for R4000,it had too many problems,no volume,switch on only when it is plugged.When I took it back on the 01 September I was told to go get the statement when I went back on the 3rd which was the final day for the guarantee n it was Saturday ,I was later told to pay because they wanted to take the laptop to the technician on Monday,Now how is that my problem I want my laptop fixed ,that's the worst customers service ever, everything they sell at gameBelabela are faulty .

Sales order Number *** Customer no ***3 Ref ***4

Mashile ***