Rear caliper is always rubbin hard on the rotors on 96 s14

[Atomic-S14]

i bought the car couple years ago, and after three month of driving to work and home my car started to make some noise from the rear brakes.so i took it to the Les Schwab to fix it in a hurry.paids 480 for rear brake job with used parts.but the problem wasn't solved.i already took it back there to have it checked out more than 3 times and they've replaced the caliper for free saying that it was a bad caliper.even with the newer caliper installed, my rear wheels get really hot and i see alot of break dust and hardly any from the front wheels.What could be wrong with my rear brakes?

[NISTECH]

check the ebrake cables and see if they are hanging up in the housing. They may not be releasing the rear brake completely.

[Atomic-S14]

well.. i took it back to the Les Schwab and now.... they came up with a new problem? they said that my brake lines are at fault for doing this thing to my caliper.should i trust Les Schwab one more time and have them install new brake lines or should i take it else where and have them look at it?

[NISTECH]

Dude ask them if they checked the brake cables. Do they slide freely in the housings? Another thing your not using any kind of special brake fluid are you?