Online appointment scheduling system to review ......

Online appointment scheduling system to review ...
It's been 4 times that I'm on the site at 9 o'clock to choose my appointment and it's 4 times that when I update the page it bug for 2 minutes ...
All the time when at the time of confirming my appointment with all my coordinates I see an error message which signals me that there is more place IT WAS 9h04 ?? What a nightmare!! hoping that for the LAST date of making appointments online I do not have this problem.
But really not cool