求翻译：Hello，This letter is to apply for a refund.Since I was out on a business trip and when i just came back，I found out the store credit getting decrease，because the child operating mobile phone games，he bought this product by mistake，it caused unnecessary consumption，I felt very upset，hope I can get help on this. Thank 是什么意思？

待解决 悬赏分：1 - 离问题结束还有