Brake Disc Pads problems of the 2007 Ford Focus

My breaks feel very mushy. I have to pump my breaks in order for me to stop. I could be driving on the highway and need to slow down or coming to a complete stop when my breaks don't respond normally. While on highway if I don't pump breaks the pedal just goes to the floor. When coming to a stop I have to pump breaks to slow down and have the pedal to floor in order to stop. If I come off the floor just sligtly with pedal the car will roll forward. Very scary may I ad. I am the second owner and noticed the problem the next day after purchase. I had the break pads and rotors replaced and it did not fix the problem. This is a daily problem.

While depressing the brake pedal, the steering wheel started to vibrate intensely. Was at approx. 60 mph. Took car to dealership, they said the pads and rotor were bad. This car only has approx. 30k miles. This is fast wear on brakes. This is a serious safety problem. The brakes are slow to grab.