Bad Interfaces

The other day I tried to change my address through a company's web site and it wouldn't accept my new address because I "already have a phone number." WTF??? I tried various workarounds including no phone number, and a fake phone number, but it insisted that once you have a phone number, and the system knows it, you can never change your address. So I asked myself, am I the first person who ever owned a phone and wanted to change his address?

On a daily basis I am astonished by the bad desig...