Doctor's already re-scheduled me twice due to problems in their office

I think my third surgery date is going to be cancelled also and rescheduled. What's the most number of times anyone has been cancelled and rescheduled by their surgeon after getting a date? I'm beginning to wonder if this is the norm or not.

We greatly appreciate your interest in helping us build our Q&A database. To discourage vandals from posting garbage, however, we require people to register before posting.