not nails related but...
i once had a client in who had a note of her colour from her previous salon. i looked them, and what her hair looked like now, and was suspicious. she said her colour had faded a lot since she had it done last, so i got the chart out and showed her the colours and she was adamant, this is defo what it should be, what was written on this piece of paper she had from her previous stylist. it even had the measures on it of how much i should use of ech colour and what developer to use. so after reconfirming with her what the colour was on the chart, and how it would look, she agreed thats what it definitely was. then, once it was rinsed and dried, she confessed to me it wasn't anything like what she usually has, the piece of paper wasn't from her last hairdresser, it was 12 years old!!!!!! and that the salon she had been going to previous to me had "perhaps" changed the colour since!!! argh!!!! i felt like i did all i could to confirm with her, and she had deliberately lied to me!!!! i offered to re colour it but she said she would go back to where she was going before, and wasn't happy with me...felt awful about it for about a week but i think i did all i could!!!
i laugh about it now...