Poor service

Poor service. I took my car in for a general service, I requested that they fill the window wiper fluid. I recieve the car back, no fluid is coming out. I take the car back in the service guy assures me they filled the fluid and checked it and it's working. He then takes the car in again and now he says the motor is broken I have to pay R2000 to fix it after stating that they did check it just a day before and it does work. I will never take my car back there for anything.