Air Brake Abs Warning Light problems of the 2000 Chevrolet Malibu

Consumer states she is having trouble with her auto, and each time she takes her auto in, it is something different. She states while driving her auto the dash warning light came on, she took it to the mechanic and was told that she needed a manifold intake value. Then later on she begun to hear a scaping sound when she applies her brakes, when she took it in they told her that she needed front rotors, she states that she was not told this when she took her auto in the first time.