Simply contact our billing department at email@example.com. We'll be happy to research the matter and provide you with the results.
In order to protect the privacy of our customers, we are not able to explain in detail what another client ordered. Thus, our response to you may be limited to confirmation that your amount is correct, or confirmation that we've corrected your amount. We are not able to, for example, explain that the customer ordered other services or how the customer paid.