my father was once paying full child support until 4 months ago, and then reduced the amount that he was paying by 50% and my mother has no idea how to get that 50% back. is there some document through the court that he could have gotten to reduce the payment? should we have recieved a notice in the mail or a phone call? what would be the best way to go after that, and what are some of the punishments that are incurred for not paying full child support? thanks for your help.