Faulty Acer Laptop- Game refuses to refund

I bought a Acer laptop online in April and collected at Game Richards Bay, only to find that it glitches and has audio problems when used for my daughters online classes. I brought it back for repairs, acer then refused to take it in insisting that staff must reset it instead then send it back to me. I collected the laptop only to fond it had the same problems. I sent it back to game and only then did it get booked in for repairs, only for acer " technicians" to say the laptop has no faults! Ontop of that they will charge me the customer to courier the faulty laptop back to me!! The audacity!!! Games solution is to pay for the courier services so i can get my faulty laptop back! Im disgusted by both Acer and Game as ive been more than patient with them only to be told im delusional when one of the staff members also saw the device glitching. The inconvenience caused to me and family is immeasurable as i have had to purchase another device for my daughters online schooling. My son who uses a HP laptop hasnt had any problems.