Issues with Bookings

Is anyone else having issues with bookings at the moment?

If we make a booking it sometimes doesn't appear in the calendar at the end of the booking and now we're having clients coming in saying they have made a booking but we have nothing in the calendar. 

We have searched the calendar in case the date or time was incorrect but there is no booking being made. 

I am having this issue as well and can't seem to find a solution anywhere.