What is Apple Charge 866-712-7753

From what I read on Google, it sounds like this group somehow got access to your credit card number. Call your bank and have them cancel the card and send you a new one. That will stop the charges because they will not have your new CC number. I had to do that a couple times over the years.

Start with this article.

If you see 'apple.com/bill' on your billing statement - Apple Support

Also:

Dispute a charge to your Apple Card - Apple Support

I’m so sorry you’re going through this. Did you check the links that SBerman provided? Those may help, especially with disputing a charge.

It’s unclear what your question has to do with your iPhone…