Apple charge

Review your Purchase History here:

View your purchase history for the App Store and other Apple media services - Apple Support

View and Manage your subscriptions here:

View or cancel app subscriptions on iPhone - Apple Support (NG)

How you proceed from there will depend on what you have found out.

User to user support forum

We have no idea

go here and see what you are being charged for:

Subscriptions and Billing - Official Apple Support

This is a user to user only forum. Apple isn't here and we have no clue what you're being charged for. Call the number you saw and ask them.