The word "incompetence" refers to someone's inability to do something correctly, effectively, or skillfully. It means they lack the necessary skills, knowledge, or qualities required for a task or job. Full definition
It is possible that they were incompetent, though I agree that the accumulation of incompetence in the various inquiries is somewhat suspicious. (climateaudit.org)
However you look at it the level of incompetence on display is astonishing. (politics.co.uk)
An entire village is denied the opportunity to vote because a clerical error stemming from gross incompetence in the digital age. (nystateofpolitics.com)