Hello, We are users like yourself of Apple products and services, we are not employees of Apple.
I guess the first question is, are you sure the email is from Apple and not a spoof email?
See if you can find your email receipt, note the product ID or Order # and contact Apple directly.
The email receipt should contain your order number, the Apple ID it was purchased under, the payment information method and date of charge(s) Then click on help in the link below
Subscriptions and Billing - Official Apple Support
If it is a subscription, go directly here
View, change, or cancel your subscriptions - Apple Support
If it is an app that you purchased directly, you should see a place within the email to "report a problem". Click on that link within the email.