Worst car service/check ever and dishonest

I took my car in for a leak to be checked and was advised by the lady I spoke to that they will do a "holiday check" later that day I was called and told my window washer motor was leaking and some other random stuff was wrong. I paid almost 2000 rand for the "Holiday Check" and noticed when I got my car back that the coolant bottle was basically empty and there was no water in the radiator. I then filled my radiator and coolant bottle with water and drove to work, after work I found a huge puddle of water under my car and the radiator and coolant bottle were again low on water. This manes 2000 rand and I was given the wrong information and sent off with a car that could get seriously damaged due to negligence lies an bad service. The window washer bottle is still full. I cannot believe how they are prepared to send people on holiday with a car that will almost definitely overheat and break down and charge them 2000 rand as well. I tried calling the service centre to speak to a workshop manager but the call never goes through, I mailed Hyundai customer care and no one got back to me. I will be contacting the ombudsman and seeking legal advice on this matter. Worst service ever and very dangerous.