Asuna not paying his loans

[A 13 year old]

Just to clarify I don't want brass to spawn in the coins or anything like that, if that were to happen every time situations like this happened the economy would be ruined. I'd like for him to be punished and for him to be forced to give me his coins he gets until he reaches the amount he owes me. Every time he gets 50k or something like that he instantly gambles it over and over until he loses it, if this pattern continues I will never get my coins back. I'd just like to post this on here so that everyone is aware of the situation and in hopes that someone could help me to make sure he actually pays it back. Every time I try to talk to him about the loan he asks for more and more days, even if he had the coins the day before and just didn't bother paying it to gamble or buy rusty keys or w/e.