Leave questions please help?

If you are on leave and have a signed DA31 can they call you in for staff duty before your leave ends?? I was told by my NCO that it was all taken care of and now this.. MY wife is pissed and says its the army or her ?? its not like I can just walk away from my contract and I am a good NCO . can they make me come back for this ? even after he said it was all coverd