Hi, have had my hair coloured with blonde highlights. The first time it was a full head this time a t section. Problem I've had both times is that the hairdresser doesn't seem to get to the root base at the hair at the front and 'misses' sections as seen in the photo. These are quite visible and given that it's not cheap I'm annoyed that I'm having to change my parting and am not happy with it. What do others think?