Got the car back, am very happy, it ended up costing R3.8k in total vat inclusive, for the water pump replacement.
1.65k for labour, 1.86k for the water pump itself, R90 x 2 (bottles of coolant) + R120 for consumables.
The leak in the water pump was where the one thingmabob joins to the other thingmajig, not a visible crack but i think the 2 pieces weren't fitting flush anymore... Can take a pic later on if it's of interest
Service was a minor one and just under 1.5k vat inclusive, and the car drives like a dream now as i was way overdue for a service.