Very Bad Service

Good day, I would like to complain about Renault dealership in Roodepoort. I took my car in yesterday 23rd October 2018 for them to check a fault sign, and my car is only 1 year old as I got it 23rd October 2017. And it took them the whole day to call me back and tell me they will keep it overnight for biometrics, and they promised to contact me in the morning of the 24th October 2018 but didn’t get a call back. I had to call in the Morning to check I was told someone will call me back, that never happened and I called again at 2pm and the lady said my car will be ready at 2:30pm and I was not even told. I asked them why are they telling me only when I call and asked them to deliver the car and she said they don’t do deliveries. I told her i knock off at 5pm and she suggested that she will leave the key with the security guard, I refused because that’s unprofessional! I then told them I will fetch the car tomorrow and asked if everything was sorted and she said yes but if the problem persists the warranty will not cover. And I asked why and she gave me a reason that it’s electronic fault and not mechanical and I asked how is it my fault that the wiring was faulty, she said that’s how it is as there was a client that had a same problem and when the problem came back they had to sort it out as warranty did not cover it. Firstly the service is very BAD! And they don’t even wanna take responsibility for anything. Please help me with this problem as I am furious and I want answers from Renault head office. Regards, Lerato ********** 800