Bought a brand new car that had defects

Bought a brand new Opel Corsa 2015 model on the 2015/07/22. I was happy with what I bought until after few days I noticed some defects on the car. I reported the matter and the car was booked in to be fixed on 2015/08/12. I went and fetched the car the following day, but I was still not satisfied. I complained and the person who was doing the repairs told me to escalate the matter to General Motors. I contacted GM, they organised another appointment with Fury and I took the car back there on 2015/08/24. During the day on the appointment day they phoned to tell me there was no one to fix or check the car. I went back to fetch it. I was not happy at all. I totally did not get value for money, and I have been failed. I gave Fury the chance to repair the car but they did not deliver. They are giving me the silent treatment. I sent an email to Fury and GM to ask them for the car to be replaced with a similar car but I did not get a response.