Pre Authorizing the funds on a clients card would insure the stylist gets paid upon cancelation. The current situation leaves the stylist with a "declined" credit card that was placed by he client when making the appointment, thus losing money. The Pre Authorization should go into effect at the beginning of the salons/stylist cancelation policy, and if the Pre Authorization is declined due to any reason including INSUFFICIENT FUNDS, then the appointment can not be made. The PreAuthorization could be "captured" upon check out, or even canceled if the client wants to pay with a different card.