I'm leaving - You owe me money. I'm not just leaving. I'm leaving because

You owe me money. I'm not just leaving. I'm leaving because you're a piece of shit.

I'm leaving! (He left the bar and said he'd come back for the bill.)

I'm leaving! (He said he'd leave if he didn't get paid.)

I'm leaving! (He left, but he didn't take the bill.)