Beware of the leopard
Make Things Easy / Politicians
The antithesis to this is if you don't want someone to do something, e.g. claim a tax refund, you make it as discouraging as possible.
Web forms that show you the new question only after you have answered the previous one, so you have to keep bothering the same person over and over again for the next answer.
Confusing instructions on web forms.
Long phone calls on hold with irritating music.
Being referred from one phone number to another.
That was my morning just wasted, and I'm sure that the Sir Humphreys of this world have big smug grins on their faces.