It is very frustrating when that happens. I'm trying to grow my hair out, and twice in the last 7 months I've gone to a hairdresser and asked for just a tidy up around the fringe, ears, and back of the neck. Both times they've taken off much more than I wanted, including off the top where I specifically told them not to. It's a struggle to find a good hairdresser, and the excuse they give is always that they need to trim split ends, or the layering was all messed up, or whatever. Like you Elsa I'm sick of hairdressers assuming they know what we want more than we ourselves know.