The barber left a stark line round the back of my head where the hair gets abruptly longer (rather than being blended in and getting gradually longer, which barbers usually do). I asked for this a couple of times and explained the request but the barber couldn’t seem to blend it, and he left the line in. He seemed to misunderstand my request and got very frustrated and hasty, which made it very uncomfortable. Still I thanked him at the end for the hard work.