Unacceptable warranty procedure

We bought a water pump at Goldwagen Polokwane on 18/05/2019. On Saturday 03/08/2019, our client told us the car has a water leak, so we stripped it just to find that the water leak comes from the water pump. So we took it back to Goldwagen Polokwane (Bennie) on Monday 05/08/2019, just to be told it will take 14 working days for us to get a refund, they must firstly send the water pump back to the factory for testing. This is unacceptable, how can someone wait for 3weeks for a refund or replacement on a water pump?