I took my truck in to the garage today because I've been hearing a
"scratching" or light grinding noise in the past week...even when I
don't have the brake pedal pushed.

They told me my rear calipers (I think he said both...I don't remember)
were stuck and my brake pads worn down...so they had to replace the
rotors, calipers and the pads.

I was driving it home and it sounds like it's doing the same thing
AGAIN. I noticed it after I turned a sharp curve. I hadn't heard
anything before that.

I'd like to know something about this before I call them tomorrow and
take it back in.

I also have an appointment that I cannot miss tomorrow about 25 miles
away. Is it safe to drive?  I drove the same route twice before I could
get it into the garage and had no problems (other than it grinding down).

Could this be caused by bad brake hoses (constricted internally)?

Thanks