Hi Untitled - I feel your pain. The same thing happened to me with a new iPhone 13 mini. I've also spoken to a dozen people at Apple Card/Goldman Sachs and Apple Store, and they provide zero service. I was "escalated" to several so-called "Specialists," none of which had helpful answers. In my case, since I only got the Card for this transaction (and the payment plan), it doesn't hurt me the way it does you, though just as you describe, it blocks the credit, so I'm cut off from about $900 worth of credit because of a criminal charge. In my case, the fraudulent charge is even dated the day before I purchased my phone, which is also the day before those phones went on sale, so should also be impossible and very easy to identify. And despite all the folks hypothesizing here about Pending Charges and how quickly those charges disappear, I'm past the 10 day mark with zero help and definitely no one looking into it. The sacks at Goldman (all of which have been borderline illiterate goons who can barely read the script) even told me Apple has until Dec 31 to handle it. Of course, if they were forced to pay me their absurd interest rate for that period, it would be deleted immediately.
The shadiest part is that Apple Store won't actually deal with it, but simply pass it to GS. If this were any other merchant, the one perpetrating the fraud would have a system where one could deal with them directly. But nope, not Apple, they just pass the buck to the oh-so sincere and helpful financial institution. If Amazon screws me with a false charge, we'd be on the phone in 30 seconds dealing with it. It should be an embarrassment for Apple who generally seem to take pride in quality customer service. Maybe cut back on terms like Genius and Specialist...