To make my point, just today, a camper came in beside us. They have a dog that seems like a nice dog, friendly and all, but not trained. It keeps wandering from their camp site to visit. The owner will say, "come here". Then he repeats the same command but a little louder. Then again as the dog doesn't listen, louder. Then again louder.
Obviously the owner never put in the time and effort to train the dog. Since the dog is actually pretty cool, though untrained, the owner repeating commands is much more annoying than the dog.