Braking system what next
So I had my rear brakes and rotors
replaced and a brake fluid flush then
drove for about 30 days then was
hearing a grinding noise coming from
rear brakes returned to shop, I was
told rear caliper had seized and
needed to be replaced, on the way
home brakes felt soft then had to
pump them , called shop I was furious
towed back , next day they said
master cylinder was bad replaced
went to pick up again brakes still soft
what the hell im at a loss