Poor horrible service

Took the car for service to them on Tuesday morning my car was fine nothing wrong just a simple service,went to fetch the car on Thursday after my service plan finally paid them.first of the car was not washed ok fine they asked him to pay for car wash myself that was the first red flag but fine took the car parked it at home the whole weekend on monday morning am driving to work the car is over heating when i check coolent is empty called them. They say my car is leaking I asked them why didn't you tell that when I went to fetch the car no response I only have invoice no any ather thing that shows what was done on the car. So guys look out for aa service center in randburg next to hyundai when on malibongew drive they damaged my car it's still a new car this was my second service on the car poor service