Awesome, you failed to state what your car is. That's rule #1 for posting. I don't think that pads at 37k are bad wear -- it sounds pretty good to me. Depends where you're driving. In San Francisco, for instance, I'd think that 12,000 miles on a set of front pads might be right; longer for the rears. Warped rotors can be due to a few things, such as a tire installer carried away with his air hammer. Those tools have always bothered me. But can you get the guy to tighten the nuts by hand? Only by standing over him and yelling threats, I think. Or maybe slipping him a ten.
I'm in the San Francisco area, so none of this sounds so unusual to me.
Maybe Hyundaitech can add a few insights about your particular rotors. But he'll have to know what car you've got.
Richard