What could I do if my payment was wrong?

Q: What could I do if my payment was wrong?

A:1) If the payment you sent us is more than the price, please contact our online agents, we will put the extra into our prepaid account(the one you registered) for the next use.
2)If the payment is not enough, we will contact you in time, and you can transfer the rest to us, we will put the money in your prepaid account until we receive the rest. We will start the delivery ASAP after we get the whole payment.