Good morning, What is the charge for $12.99 on Apple Music
What is the charge of $12.99 in my account today?
If you are in Australia, or are using the Australian iTunes Store, 12.99 would be the price for the Individual monthly subscription to Apple Music. Apple Music Pricing and Plans - Apple.com (AU)
Otherwise, use the support document you posted from to identify the charge. If you see 'apple.com/bill' on your billing statement