Salzamt

Noun

 * 1)  an agency tasked with the administration of the government salt monopoly
 * 2)  a fictional non-existing or unresponsive government agency

Usage notes
For the humerous usage, the word is typically used with the verb, e.g. Du kannst dich beim Salzamt beschweren (“you may complain at the department of saline affairs”), meaning that any complaint with any authority will be fruitless.