The San Francisco Treasurer mistakenly sent out a batch of erroneous collection notices last week to city businesses.
According to the San Francisco Chronicle's City Insider blog, the Treasurer's phone system was jammed, prompting folks who wanted to challenge the fee to come down to City Hall in person.
One person who received a letter told the paper that the business assessed a $310 tax bill had closed three years ago. Even worse, the tax claim was from 1992.
The owner of the former business argued the bill, but noted that other taxpayers might just trust the city and pay up.
Thanks San Franciscans for the good advice to always double check every bill, be it from your credit card company or an official tax collector.