United States Post Office Downtown Station. Don't want to send cash?Go to any Post Office location. Take cash, a debit card, or a traveler's check. Make your check or money order payable to: State of Alabama - Child Support. A deposit slip must be filled out and submitted with every money order. Do you accept money order for commissary? No. We accept cash and credit card at the kiosk. Fill in the recipient and your address; for bills, include an account number; sign it; keep proof of payment. Visitors may also deposit cash, only, at the facility, Monday through Friday excluding holidays.