I had just moved into a new apartment and was having problems with the mailman, who was delivering the previous tenant's mail to my address. Hoping to resolve the situation, I enlarged my name on the mailbox, but he still kept giving me the wrong letters. 

Finally, I left a note saying that he was delivering the mail incorrectly. The next day I went to the box to find this addition to my message:

"Sir, I am delivering the mail correctly. You're just living at the wrong address."