There's a couple of thoughts on this. My thoughts are that a rotor should never be turned, but having said that, Kia Corporate authorizes the dealerships to turn rotors, however I would always check the rotor thickness after being turned to make certain the rotors don't fall below the minimum thickness that is stamped on the rotor. Being a relatively new vehicle, I can't condemn the procedure unless someone were to mic the thickness after turning, then, if below minimum thickness there would be proof that new rotors should have been installed, but as a customer, you won't get anywhere demanding new rotors without any justification/proof.
Just drive the car and forget about the repair, but next time when pulsation starts, or pads need replacement, I'd certainly go for new rotors, but once again proof of thickness makes a world of difference.