I've noticed that myself (both issues)! Very rude, in my opinion.
If I can save you some aggravation... If you already have a street address, you can plug it into this USPS web page and get the zip:
http://www.usps.com/ncsc/lookups/lookup_zip+4.htmlHope this helps you! Heck, it's Friday, so it can't be all that bad!
DonnaP99