Dear Guest: Thank you for your staying with us and we're sincerely apologize for your unpleasant experience caused to you.On that day,the invoice machine was out of order suddenly,we'ae carry out in repair immediately.We suggest you leave your home or company adress,we can send the invoice to you.We apologize again for keep you waiting so long time.Looking forward to seeing you soon and experience our Satisfying and Surprising service.