A Kansas man received a computerized bill from a store showing that he owed “$00.00.”  He discarded it.

The next month he received another bill stating, “This account is now past due.”  He circled the zeros and returned it.

A few days later came a scorching computer letter exhorting him to pay his debt of $00.00.  The man finally mailed a check in the amount of $00.00.  He received no further pleas from the store.