I've seen Claudia a couple of times in the past.
She is a skinny Polish MILF who gives really good service, both oral and sex are memorable.
As far as I know, she is an independent. I suspect what happened here is that she over ran a previous booking. Once, she asked me to wait 20 minutes for our booking. When we did start, she was receiving calls presumably from the next person. She ignored the calls and said it was OK to make him wait. Now, if it had been me on the other end I would have been furious at the silence. I don't mind if a girl wants to change the time within reason, what I hate is not knowing what's going on.
When you eventually connected with her, she must have thought you wanted to cancel the booking or your tone set off some alarm bells and she no longer wanted to see you. You should have left negative FB on aw, informing the hotel doesn't help. Think of other punters after you who made a booking and came to the hotel on a wasted trip only to find she's no longer there.
She is clearly in the wrong here but your solution didn't help either party. You could have asked her to see you later at a heavy discount for the inconvenience for example.