Europcar借车问题，着急呀

我借了一个车，europcar提示车辆紧张要我48h内等确认，问题是48小时早过了，它也不发邮件给我，我要出发了，着急啊、
我该怎么办呀？

Your Booking is subject to availability.Your reservation is not confirmed as some items are pending confirmation within 48 hours