Thank you for purchasing your Groupon. Please call 925-932-4542 to book an appointment. As per the terms of a Groupon it cannot be used for 24 hours after purchase to allow for Groupon to process the order. Your voucher will have an 8 number code under a bar code. This code is necessary to book an appointment. You will need to wait until you are issued a voucher to have access to this number.