Disobliging
verb
To be unwilling to oblige; to disappoint, to inconvenience, not to cooperate.
“Sorry to disoblige everybody; I know you were depending on me to bring a good weather forecast for our fête, but it is going to rain.”
To offend by an act of unkindness or incivility.
adjective
Not obliging; not making an effort to respect the needs and wishes of others; unaccommodating.