Checked online and there was n appointment availab...

Checked online and there was n appointment available at 8:30pm. Decided to walk in and arrived at 8:20pm. When I got there I was told that there were no more times available for the day... So I left. On my way home I checked the website and the 8:30pm slot was still available. If you want to close early, that's fine... But maybe don't say you have open appointments available on your website in that case.