Unusual one and I am not sure I'll be able to explain it right but very recently, a few weeks ago, my friend and her friend, who also happens to be a tattoo artist.
There was a large event in London (we're in the North) where tattoo artists could rent a space inside a building, to show off their artistry to potential customers. They could also book in any number of customers throughout the day to demonstrate their work, and potential customers could buy a ticket to either just go and look around and book in for future or potentially get a tattoo from an artist that day, OR they could find an artist online before the event and book in for the day of it.
My friend and her tattoo artist friend decided to make a day/night of it and my friend booked with her, not sure if she also had other bookings or intended to just show up and hopefully gain further customers. When they arrived, the people on the door looked for the artist's booking and said 'oh no, not another one!'
Turns out that someone, somehow had been taking multiple, hundreds of bookings from artists and had pocketed the money and not booked them into the system. Some artists who'd had multiple bookings made had lost 100s or more £. Every artist who'd been a victim had lost their booking fee, and customers had lost their deposits for their tattoos. My friend lost a few £100, I am not sure how much her artist friend had lost, and as far as I know nothing could be done about it. Looked like an 'in house' job, but perhaps not. They both came straight back on the train as the artist was devastated and too upset to hang around, money but also the feeling of letting people down.