Why Do They Phone Us?

It's been one of those odd days at work. We had a phone call this morning from someone who had been given our number by the Tourist Information ladies (I have no idea why they thought we could help!).
"I'm enquiring about the Book Fair," the lady said.
"Um, what Book Fair?" I asked.
"The one that's on at the same time as the Festival," she said. "They're specialising in books about Wales."
"I don't think so," I said. "There isn't a Book Fair in Hay at the same time as the Festival." (where would they put it, with the town bursting at the seams already?)
"Oh, but there is," she said. "My husband saw it on the TV."
"Sorry, but no - the bookshops are all open, and there's a bookshop on the Festival site selling the books by the Festival speakers, but there isn't a Book Fair as well."
But she was adamant; her husband had seen it on telly so it must be true.

Later, we got: "Hello, there's a B&B close to you, isn't there? What's it called?"
"That would be The Firs," I said.
"Can you give me their phone number?"