I suspect he's a child who is not willing to lose money but want to get money from gambling
just look at next month he must come again here to bring other problems
I guess that not just a child who does that but some adult people can do that because they do not want to see their losses so they will complain to the casino about their losses. If they can realize the consequence of playing gambling by losing their money, they should accept that and not complain about everything they will get from gambling.