Your story reminds me of a case in my city not long ago a minor was addicted to playing slots and this child was only 14 years old until he owed his neighbor a total of $40 and after that when he ran out of money he stole goods from his neighbors to sell and the money is used for gambling.
At first all the neighbors not suspect that the boy was stealing because they did not know about his gambling activities, but one night my friend tried to lurk in someone house and saw the boy and his friend stealing things and my friend caught them and was interrogated, all of them turned out to be playing slot.
After that, best way is to return it to the parents and put it in a psychology doctor to give lessons about the dangers of gambling and carry out rehabilitation and also when the child is given less money at home, which is only enough to buy food and drinks.
Maybe this method is a little more helpful and the most appropriate way only his family can determine.
Some children doesn't have enough money to play the gambling,So such children will do the steal habit and it only reflected after complete monitoring.Because the neighbor will not focus the children at the beginning,mostly they target the workers of their house.So the children will not get enough money to play the gambling in long run.The best way for the children is they need to win the big amount before being captured by the neighbor.From the winning money the children will play the gambling on the upcoming days.
Simply cut the money source on which this would be simply be cutting off with that bad habit. If the parents of that boy would really be limiting out on giving that allowance or giving the amount which its only sufficient for
his commute or food spending then he would definitely be doubts on using it on gambling.This is the only way which i could really be able to say on which is to minimize or cut off extra money for him to be able to play.
There are people or type of person who cant really be able to do bad things despite on being addicted.They are really that still in good control with their sense and awareness on whats good and bad.
On the time that they cant play just because they dont have the budget, then they would eventually be able to overcome out that kind of impulsive dealing with gambling.
As a parent then better to give them some advises about on stopping or cutting on dealing with gambling which it isnt really that good. This would really be making you as a gambler
which we know that spending up money would really be limitless on the time that you do have the funds then you would continue on doing it.