Prius (2004-09) :: Low Speed Squeaking Brakes

Bought my Prius about 14 months second hand . Despite 112 checks or whatever, within a few months the brakes were grinding. I took it to a local garage and they said the pads were worn to near nothing and replaced them all. They said I had scoring on the rear brake discs, so I replaced them too.

I got really back noise with the front brakes every time I used them after a few weeks. Took it back. Was told that the front discs needed replaced (and off course the front pads again). It was soon back to noisy and they replaced the front pads for nothing. The problem went away for a few days, then returned, but only a very low speed braking (or when putting the final squeeze.)

That garage tried a few things, then said it was my heaving braking glazing the pads, so they roughed them up. Problem hadn't gone. Add to this that the non-moving parts are really rusty looking, it looks naff.

Well, I took it to Kwik Fit having had some time to save some money for a proper fix. They would be happy to replace all discs and pads, but it'd cost abit. Called Toyota, they cost about the same. I left my car with Toyota yesterday pointing out the problem and a few other things I wanted fixing. I made it clear I felt the brake discs and pads were 'crap' and not Toyota and wanted them replaced. They said they'd inspect and do what was necessary.

Well, I've new windscreen wipers, they sorted out a separate problem and cleaned out the front brakes. According to Toyota there is nothing to stop those parts of the brake disc that aren't moving from rusting. They also said the discs and front pads were fine. Well, that squeaky noise is still there.

Why, after practically begging, did they not just replace everything? Is there any other possible explanation for the low braking speed squeak? Why don't brake discs not come with those parts not in contact with the brake pads painted so they won't rust?