I learned to fly at a major general aviation airport in the midwest. I was assigned an instructor that was gruff, mean and didn't care. On my very first landing attempt, I was too high and had to go around. He threw a fit, yelled at me and took over the plane. He landed it. I didn't say a word, but went to the head of the flight school and told him what happened. I was assigned another instructor who was very nice. That instructor later told me that "grumpy" had been fired. If you get a bad instructor, don't put up with it. Complain.