A man in the United States popped out to his local petrol station to buy a pack of cigarettes - only to find his card charged $23,148,855,308,184,500.

"I thought somebody had bought Europe with my credit card," said Josh Muszynski, from New Hampshire.

He says his appeals to his bank first met with little understanding, though it eventually corrected the error.

It also waived the usual $15 overdraft fee.

"It was all back to normal," Mr Muszynski told his local television station, WMUR. "They reversed the negative balance fee, which was nice."

His nightmare began when he checked his online bank account a few hours after buying the cigarettes.

He thought he would be a couple of hundred dollars in the black. But his overdraft had pushed him into the red - by an amount equivalent to many times the entire US national debt.

"It is a lot of money in the negative," he said. "Something I could never, ever, afford to pay back.