Dodge Magnum Brake Noise?

I bought a 2007 Dodge Magnum about a month ago and I am having load noise coming from the brakes when they are pressed. I had a shop look at it he replaced pads, greased, and checked rotors did all that he could (30+ years experience). The brakes still are load when you press them and there is no recall for that vehicle. Does anyone know what the problem could be?