A US woman got the shock of her life after receiving an electricity bill of US$284.46 billion (NZ$404.53 billion).
Mary Horomanski, 58, was told she had to pay the full amount within a year.
"My eyes just about popped out of my head," she told the Erie Times-News.
"We had put up Christmas lights and I wondered if we had put them up wrong."
Fortunately, a spokesperson for the energy company said the bill was an error after a decimal point was moved.
"I can't recall ever seeing a bill for billions of dollars," he said.
"We appreciate the customer's willingness to reach out to us about the mistake."
The correct amount was US$284.46.
Ms Horomanski says the bill gave her such a fright she asked her son for a different present for Christmas this year.
"I told him I want a heart monitor," she said to the Erie Times-News.