I had a facial done today and was asked to get an itemized receipt twice. The employee hesitated and said that the system cannot do that. I have been there a couple of times and never bothered about the receipt since those visits were not shops. I asked if she could email the receipt. She said that the system won't let me input my email but after insisting she tried and I could enter my email.
After a couple of minutes, I got an email and I saw that I was charged for 3 services. I asked the employee about that. She turned pale. She said that the system does not allow her to charge eyebrows for $9 and so she had to "make up" another service to charge me $10. She said that maybe she forgot to return me the extra dollar. I asked her to keep it. She said that she would adjust it on my next visit. Something tells me that this is the reason why the guidelines stress again and again on getting a receipt. If this was just a mistake, I hope she is not fired. Although, I have always seen them staring at each other and talking in signs when asked for a receipt.