I recently had this problem with a booking as well. Just keep on it - keep calling the Airbnb host line until you get someone who understands the problem and can help you fix it. Eventually, it seems that most of us with this issue get the problem resolved and the payout released.
Keep your spirits up, and try not to worry. Also, please report back here when you finally get paid, so everyone can see that eventually there is a happy ending! 🙂