mismanage

Verb

 * 1)  To manage an area of responsibility in a way which is inept, incompetent, or dishonest.
 * She mismanaged my finances and left me bankrupt.
 * 1)  To behave, in a management capacity, in a manner which is inept, incompetent, or dishonest.
 * The fundamental reason why the company failed is that the CEO and other top managers simply mismanaged.