Apple Card Fraud?

Why doesn't the total of all of my purchases plus any interest, minus what I have paid match the current balance total. I called Goldman Sachs about the before and the account just magically "fixed" itself. But now it is happening again! Beware apple card users that can add, something funny is going on with the new Apple Card. Math is Math; if I total up all of the items I have purchased - subtract all the payments and then add any interest. The final balance should match! Also there were two purchases for over $1600 each on the Apple Card that I never made - is the card hackable already?