Pathetic customer service

What a waste of time! I had an appointment with some friends for a pedi. Unfortunately due to a personal emergency with another friend, I was running late. I informed my friends but they were told that they had to go ahead with their appointments. Due to this, it seemed pointless for me to go through and have my pedi done alone. I informed the spa that I would have to cancel and I was informed that I was still liable for the full amount for the treatment. My confusion is due to the following points. 1. To my knowledge there is no cancelation fee outlined on the site. 2. Having to pay the full amount for a cancelation seems utterly ridiculous. 3. I asked if I could rebook my treatment and I was refused based on the fact that they apparently had already prepared for my treatment. What could possibly have been done besides boiling a kettle of water? Unacceptable on so many accounts especially in light of the fact that I was willing to rebook. I will never waste my time or money on this establishment again.