In December 2006, George Vaccaro , a Verizon customer had a customer service phone call where Verizon had a legendary "math fail" as it would have been dubbed at that time.
This is a viral tale from the early/modern internet age of the oughts.
In the calls, the Verizon employees repeatedly fail to acknowledge the distinction between 0.002 dollars and 0.002 cents because they think "0.002 cents" is $0.002; in other words they think $0.002 is 0.002 cents simply because the 002 comes after the decimal point.