I arrived 15 minutes early but I'm still waiting w...

I arrived 15 minutes early but I'm still waiting way past my appointment time. This is very upsetting to be because if I was late they would not even want to see me ! I even asked if I would be seen on time and the front desk assistant said " to my knowledge there not running late " .This is the second time being was here and was on time and they were not . The great service is being over shadowed by the constant waiting and lack of time management !