Before the expression is said by a guy, he previously says the following sentence. I'm not sure if it is related to Kansai dialect.

しっかりしてんかいな　ほんまに　無｛む｝計｛けい｝画｛かく｝なことされるのいちばんきらいや。

Another question: Does the 「無計画なことされるの」　mean something not being planned?