See your purchase history for the App Store or iTunes Store https://support.apple.com/en-us/HT204088 to see if the charge was made by Apple. If you have a problem with a subscription or a purchase, see Subscriptions and Purchases https://support.apple.com/en-euro/billing. If you think you may be able to get a refund, then use the request a refund link. It will take you to Request a refund for apps or content that you bought from Apple https://support.apple.com/en-euro/HT204084
See How long refunds from the App Store or other Apple services take https://support.apple.com/en-us/HT210904
You also can get Apple telephone support for help in solving your problem using this link https://getsupport.apple.com/?caller=kbase&PGF=PGF63005&category_id=SC0245&symptom_id=23362 Be patient; sometimes you can't get immediate telephone support.
And here is how to contact iTunes worldwide support via text or chat using this link https://support.apple.com/choose-country-region/itunes After choosing your country, see the heading Tell us how we can help
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But, I am concerned that you may have been scammed. Apple does not make many billing errors.
Could you have provided any potentially damaging information to anyone? If yes, you'll need to follow up with your credit card company, bank, or Apple, etc.
And see If you think your Apple ID has been compromised https://support.apple.com/en-us/HT204145and Increase the Security of your Apple ID https://support.apple.com/en-us/HT201303
To be proactive, learn about phishing, scams, and Apple practices, etc., see:
If you see apple.com/bill, itunes.com/bill, or an unfamiliar charge on your statement https://support.apple.com/en-us/HT201382
Identify legitimate emails from the App Store or iTunes Store https://support.apple.com/en-us/HT201679
How to avoid scams when using Apple Pay to send and receive money https://support.apple.com/en-us/HT208226
This scam related information from Apple including reporting scams to Apple see Avoid phishing
emails, fake 'virus' alerts, phony support calls, and other scams https://support.apple.com/en-us/HT204759
How to identify scams related to purported apple notifications—per Eric Root.
“Apple will always address you by your name or the name they have on file for you, not Dear Customer, Dear Client or by using your e-mail address. The e-mail will be from @apple.com or @iTunes.com. E-mail addresses can be spoofed. You can go to Mail/View/Message/Show all Headers to see more. Apple emails won't have poor grammar/misspellings. Apple e-mails will never contain an attachment. Apple will never request personal information by email such as Social Security numbers, your Mother’s maiden name or full credit card numbers. …The only exception to the above I have noticed is if you order something from the Apple Store (apple.com), your receipt will be addressed to Dear Apple Customer. That is a receipt for a purchase you initiated.”
When Eric says Apple will always address you by your name or the name they have on file for you, I am not sure if he intends to include being address by your first name. I get some pertinent Apple emails that use only my first Name.
