All the payments you make for Pethereum are directed by and via Apple/Google.
If you received any suspicious receipts from iTunes/App Store or Google Play, we recommend you to contact Apple/Google support as soon as possible.
As the purchases are processed by Apple/Goole, we are unable to see your payment information or make any purchase activity without your authorization. Your personal information and payment methods are the responsibility of the account's owner. Apple/Google keep your account information secured, but we recommend you to contact Apple/Google for any fraudulent charges.
You can find more information in the following links of Apple and Google: