Audi Bad service “Claremont & N1 city”

I bought a Audi Q3 in 2015 and I’m not happy with my purchase, I’m not gonna dwell on the previous shortfalls I’m going to tell about the most recent one. I took my car for service in their N1 branch last year an told them about the sound that the car makes when I reverse and the smash and grap that has bubbles at the back window (factory defect), I was told they can’t assist with smash and grab Audi Claremont where I bought the car should fix it and the will take care of the noise issue. When I got the car back the noise was still there, I spoke to their customer service and I was told the will get to me but they never did. I’m September I took my car for service in Claremont branch and informed them of the issues, the fixed the noise but not the smash and grab. I have calling their service personal Jonathan almost everyday trying to get to fix this factory defect but he keeps on saying he will speak to their after sales people they should have sorted it out already, 2 and half months later nothing has been done.