One has to wonder how he made purchases since they require your personal Apple ID to make the buy!
Use the report a problem links in the emails to make your request of the Support team.
Late 2012 Mac mini, macOS 10.13.1; Watch S3, watchOS 4.1; iPad Air 2 & iPhone 6+, iOS 11.2; TV 4th Gen, tvOS 11.1; Airport Express, AirPods