法国退税要退多久啊？

7月2号从CDG飞走的，回国后发邮件给premiertax查询了退税状况，对方说已经收到了我的voucher。
Dear Customer,Thank you for your email. I have checked our database and can advise that your voucher has been processed successfully. Your refund is due to be sent to your CUP card ending with 4884. Your refund should appear on your July period statement.然后就没有然后了。。。这张信用卡收款是没有问题的，以前在Booking订酒店后来退款也是这张卡收款的。好着急。。。