When we arrived in Plymouth and called the Plymouth YC dock, the dock master said they had no record of our booking and had no vacant moorings. Luckily the neighboring Safe Harbor Marina had a slip, was expensive of course, but we had no recourse. I visited the Plymouth Yacht Club later and spoke to the manager. Our booking came up right away on his computer. He apologized for the mistake and I have requested reimbursement of our mooring fee and our expenses at Safe Harbor Marina. I did not get an explanation as to how the booking is on his computer but not known at the dock.