Auto shop business practices

My older sister had a 96 or 7 Plymouth Breeze that she took up to the local Midas (30mi away) to get the brakes changed out without telling me or my dad (we would've done it).
She came over and then told us that she took it there and that they charged her something like $640!!
Said they said they had to change the rotors, pads, drums and shoes, and the timing belt. And they did it without her permission (rotors,drums, belt).

Needless to say, when I looked under the car, it was the same old rusty drums and rotors. I doubt they even changed the belt.