AIO: Nail tech labels me “no show” 15 mins before my appointment

I had an appointment scheduled with this nail tech for yesterday at 10am. I had spent the previous night with some friends doing a staycation at a local hotel and left early the next morning to make it to my appointment which was 30 mins away. i arrived 5 minutes before my appointment time and saw that i was already marked as a no show and my deposit was forfeited. before my appointment even started, she had already given my slot to her next client. after her last message, she blocked me.

for context, apparently there is a policy where you must respond within 45 mins before your appointment to keep it. in all my years of appointments i have never experienced a policy like this. when i booked with her last time (the only other time i saw her), i told her when i was on my way because she asked if i could come early and i said i would come as soon as i was out of work. in my opinion, this policy was not made clear at all. it was listed at the bottom of a policy list located in her instagram story highlights. i had also confirmed my appointment with her 3 days prior and paid a deposit on the appointment.

AIO?