I constantly receive SMS to pay for what I have not ordered

If you did not make a subscription at the Apple App Store, then this could very well just be SPAM messages.

Ref: Recognize and avoid phishing messages, phony support calls, and other scams - Apple Support

Hey there, OleksandrMelnyk27!

Thanks so much for using Apple Support Communities.

It looks like this message is most likely not an official notification from Apple. However, you can take a look at your active subscriptions and make any changes by following the steps here: How to cancel a subscription from Apple

Here's a good resource on how to identify fraudulent messages: Recognize and avoid phishing messages, phony support calls, and other scams

We hope that this information is helpful.

​Have a great day!