I have a 96 gs auto.. I got my brake pads replaced from just brakes about 2 weeks ago and they told me my rotors were warped and need to be replaced because there wearing the pads down quikly.. Well they wanted to charge me 500 dollars and i did not have the money do i did not have it time... well now 2 weeks later i here some sqeeking.. and on my left back drivers side wheel sometimes it a very deep like rubbing/grinding sound im not sure what it is or where i should take it too. how much do you think this will cost to get fix..?