23.3—Refunds.
        
        (a) Rectifications and readjustments.
         See  § 22.6 of this chapter for outline of circumstances under which fees which have been collected for deposit in the Treasury may be refunded.
    
    
        
        (b) Refund of wrongful exactions.
         See  § 13.1 of this chapter concerning recovery from consular officers of amounts wrongfully exacted and withheld by them.