MERCEDES BENZ C180 BRAKE SYMPTOM

I Am Driving A 2006 W203 C180. I Have Recently Changed All 4 Disc Rotors And Brake Pads. There Have Been Squealing Sound Coming From The...

Purchased Car 6 Months Ago. Have Done 5000miles Took It To Main Dealer Concernig Brake Noise. They Said They Checked. No Fault And Braked...