Complaint Review: Just Breakes

My car started making squeaking noise when I step on the brakes// Just brakes lures you with a low start cost then they told me that I need to have   re caliper the cylinder// or the problem is going to keep coming back and I will be wasting the $99.98 that I have came in for... because the safety of my family was priority I hesitated but reluctantly agreed//  and ended up paying $589.65/ there no replaced parts just a whole bunch of recalibration... I am not very knowledgeable with cars and when I told this to my friend who is a auto mechanic he says I was taken for a ride and that brake job only broke my bank account// tried to call the district manager and of course he only defends his store and told me everything is correct// *** WARNING**** if you trust them they will RIP YOU OFF !!!