You have 13k satoshi on your balance and you tried to withdraw 10k satoshi but failed because the system says that you try to withdraw higher amount than your balance so I guess there must be something wrong with the withdrawal system. You can try to contact the site's representative about this issue or you can use the contact support available on the site, I don't think the site will scam you for that small amount of money.
Do you think of potential cause from transaction fees/ withdrawal fees? If total balance is 13k satoshis, and that guy want to withdraw 10k satoshis; what if withdrawal fees (required by the site and by bitcoin network) exceed 3k satoshis. For example, with withdrawal fees are 4k satoshis; after subtracting it, total available balance for withdrawal will drop to 9k satoshis (not 10k satoshis, as that guy imagined). I do not know real reasons (who knows), but I guess it is the highest possible reason.
Once a site set a fixed withdrawal fees, logically it wont exceed to higher amount. In this case, the site charge 3000 satoshi so players wont be charged more than that although the bitcoin network requires higher fee. I have never experienced such exceeding withdrawal in many sites. Exceeding withdrawal fees happens on site without fixed fee only IMO, so the fee is always changing based on the latest bitcoin network. So it is not reasonable if the site has fixed 3000 satoshi but it charges more than that.