Huge issue with brakes. Disc brake system changed for 3rd time in 6 months.

Huge issue with the brakes of this car. Most of the people don't even know because of playing music in the car. While driving @ speed of 20 to 25kms and applying the brakes car makes the noise of whistle. Even company has admired the issue in this car. I have driven this car for 10000 kms and they have changed entire disc brake system for for 3rd time. Dashboard also makes noise. Pls stop the music drive the car on a slow speed and then you will come to know about the issue.. not happy with the purchase. Driven ford for 7 years but have not found any such issue even after driving 1.5Lac KMs.