Bought the wrong thing and want a refund

Hello, I'm a college student from China, my living expenses are very small, I know that the game has to be paid for testing, and I save 230 from the living expenses of 1000 to buy your game, because my English is not very good, I can't understand your page, I thought that 300 coupons can buy the game itself, so I divided two recharge game coins, resulting in not buying the game body and not being able to play the game, I sent your account information to your email, but I didn't get a replyI'm really sad, I hope you can help me solve the problem.