Glowing in the chair every single visit — thanked us, tipped, the works — then a fresh one-star review online within 48 hours, always a different invented grievance. Never once mentioned a single complaint to an actual human being at any point. We now check the reviews before we check the till.
A five-minute delay, caused by the previous client's appointment running long, was apparently sufficient grounds for a full verbal broadside against a junior therapist who had personally caused none of it. Loud enough that people in the waiting area started googling "is this normal."
Had a full set of nail extensions done, admired them at the till, paid, left happy — then disputed the entire charge with the bank three weeks later insisting the service "never happened." We had before-and-after photos taken at completion, as we do for every set, purely for the portfolio. Turns out that's also excellent evidence.
Booked a full colour and cut — three hours of chair time, product, and someone else's appointment turned away to fit her in — and cancelled by text four minutes before start time. Rebooked the following week. Did it again. At this point we assume it's performance art.