A woman has received a debt recovery letter from Centrelink telling her she's been overpaid and had to return the money.
But rather than a massive bill, the government agency was chasing Kerry King from Rowville, Victoria, for two cents.
So she paid up - by sending Centrelink a two cent coin.
Although still legal tender, two cent coins were withdrawn from circulation in February 1992, according to the Royal Australian Mint.
'I was contemplating sending them a five cent piece and asking for the change,' Ms King told Mamamia.
Social media users were quick to ridicule Centrelink for the bill after hearing the news.