Return refused of defective product

I bought a set of Mooistar travel luggage from Takealot for a month long European trip. I only used the middle size. After about a week the two wheels broke and shortly thereafter the handle broke. The zip finally stripped towards the end of the trip. Takealot refuses to refund it in spite of a 6 month limited warranty, because the wheels and handle are damaged. This is a defective product.