you are refusing to act upon the advice or the order
Disobedience means that you are refusing to act upon the advice or the order. Human is naturally the great disobedient thing in the whole universe which has been created by God. At the first step human disobey his own creator the God by forgetting his order. No matter the human got trapped by the Satan, and he disobey his God. As a result he was get out of the heavens and sent to the earth.