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Sometimes the bills being issued are not only late, but also out of kilter with the amount of energy the customer believes they used.

“The world is out of kilter,” she later tells us.

There were, however, occasional moments of good fortune during a knock which was completely out of kilter with the way most of Australia's players have approached this match.

"I had explained the situation to him... and then he asked a very off kilter question about sex, which kind of threw me a little bit," she said.

“We build a statistical profile around what good normal looks like. We can see, based on the data the bank has, if something is normal behaviour, or anomalistic and out of kilter.”