Faulty Goods: Refund/Replacement Refusal

I am so disappointed and disgusted by Makro Cape Gate for the way they disregard consumer rights on the faulty goods they sell to them.

I bought a Goxtreme Rebel camera about a month and a half ago so that I can use when I get my mountain bike. I then bought the mountain bike recently and started using the camera. I was so disappointed by the fault of the battery on this unit. It did not charge to full charge and upon switching on for use, the battery immediately drops to one bar and after 30 mins of use, the battery showed low indicator.

Due to the fault, I then brought this camera back to Makro Cape Gate on the 12th of July 20 so that I can buy an alternative unit or get a refund. The staff there plainly denied me these options and said this will be taken for repairs for more than 21 working days. Repair a faulty battery life?

Clearly this Makro has no regard for consumer rights as clearly stated in the CPA whereby if the unit doesn't fulfill the purpose for which it is intended (within 6 months), it should be refunded, exchanged or repaired depending on what the customers chooses.

I don't want this unit and I need my money back or an alternative unit and I will not wait for 21 days because I bought it for a planned use within a specific period of time.

I need to urgently get my refund or replacement and stop treating your customers the way you do at Cape Gate because we buy from you due to some level of trust in your perceived integrity, but clearly this is not what you stand for.