I think if this sort of thing happens once in a while, you have to be accepting and tolerate it.
But if it’s happening every time, they are taking the mickey, aren’t they?
It’s time to give your custom to someone who appreciates it.
chewbacca have you thought of going to a salon? Then you could arrange an appointment at the time of your choosing, and they are less likely to run late, find other things to do etc. They’re also perhaps more likely to be concerned about their reputation.
I’ve been going to the same salon for 14 years. In all that time, they phoned me once to say that my stylist was off sick. I was offered the choice of rescheduling with him, or seeing someone else.
The rest of the time I am seen promptly, made to feel welcome and generally looked after.
Maybe your hairdresser isn’t actually charging enough, and she feels resentful as a result, and that’s why she is offhand in her attitude?