Total Disappointment accessories and service

I am using this car. Performance of the car is great. It’s around 7000 Kms driven. In 5000 Kms itself, i getting a disruptive noise in doors. And few more looser parts inside. It’s total disappointment. Now Continuously the noise is there while the driving. Even service providers couldn’t solve. At last they accepted that it’s vehicle complaint. And they created few more problems in door. Now the door is not close properly. I bought this vehicle with more interest and eager. But now I feel bad about it.