Is not confirming the appointment the same as cancelling it?
My opinion, it is not the same. Of course no confirmation beforehand till a certain time and i won’t keep the booking, that is obvious, no harm done than.
But i think it is just rude just leave it like that. Especially those bookings made in a proper way, in advance, with pm.
It is not time wasting but not cancelling either.
What is your opinion?