I had a similar problem as the OP last week. Made a booking by text and email. She ignored the text, but answered the email asking me to ring and confirm. I did this but it went to voicemail, so I left a message confirming. Heard nothing. Booking was for 3.30 so I rang at 2.30 to check booking was okay. She answered but told me she was not free at 3.30 !! At least I didn't stand around in the cold !!
She has had a good write up since, and I think another one to follow, but I will give a miss now. There are much easier ones around to deal with.