When I worked at the CPA office downtown years back, I was responsible for processing and sending out all tax returns for the office. Well I had typed the address incorrectly on the mailing label and because I had used the correct Zip Code, it did get delivered (and Yes this was done in April, of course after thousands of returns went out without fail). Fortunatley these folks didn't owe any money and were getting a hefty return. Needless to say they were happy as heck to get their return in the mail.
Another time I had sent one out fedex and back then I was hand writing them all in cause we didn't do it all that often But the carrier misread the street address to one of our clients and couldn't find the address so naturally it went back to Fedex hub wherever in that city and tried again the next day. I got the heat for that one cause the driver couldn't read my writing. Happens when your in a rush I guess.
Those are a few things that I can think of off the top of my head. Believe me when they are tax returns (and rightfully so) they are looking for them to get them in on time and accurately and when something goes amis they get testy.
Chris68
Peer Moderator 
