Unfair treatment and poor service from westvaal isuzu lichtenburg

I dropped off the car at westvaal isuzu lichtenburg for timing service to be set on Friday 14 September 2018. I was told by the lady at the service desk to leave the car behind and they will let me know when they are done with it. On the 17 September, I received a call to come and collect a car, the car is ready (I paid R2961.25). I hiked from Mahikeng to westvaal isuzu lichtenburg to get the car and one of the employee brought it to the front section where clients collect their cars. I then drove off to Mahikeng, now on the way to Mahikeng the car was flickering RED on the water Gage, and I pulled over to the side. I opened the bonnet and realised that there was no water in the water tank. I then called the westvaal isuzu lichtenburg to make them aware of the situation and the lady at the service told me that she will call me backand she did exactly that; but she handed the call to the technician to talk to listen to my problem. He (Technician) told me that he is coming to help me. To cut the long story short, westvaal isuzu lichtenburg want me to pay for the damages. I then told them, I will not do that.