Hello роман146,
Welcome to Apple Support Communities!
We want to help you get a refund for the extra charge. Use these steps to request a refund:
"How to request a refund
- Sign in to reportaproblem.apple.com.
- Tap or click "I'd like to," then choose "Request a refund."
- Choose the reason why you want a refund, then choose Next.
- Choose the app, subscription, or other item, then choose Submit. If you were charged for a subscription that you no longer want, you can also cancel the subscription."
This Apple Support page has the full details: Request a refund for apps or content that you bought from Apple - Apple Support
If you still need help with the billing issue, please reach out to an Apple Support Advisor for further assistance: Get Support
We hope this helps to resolve the billing issue so you're charged correctly.
Cheers!