Debra, I am sorry for the inconvenience you had with your vehicle. We have never had a brake flush cause a leak in the brake system. The flush is done a very low pressure typically 15 psi. A typical brake system will produce around 1200 psi when the pedal is depressed. I am not sure what component began to leak, but brake components do fail. According to my records we did the flush on 8-4-17 and your leak occurred around 8-24-17. We will be happy to try to correct any issue to your satisfaction.