Strange transactions when buying Macbook on student discount
So I bought the Macbook Air M2 which came to a total of 1600.18$.
I chose to pay in full.
Initially, as soon as I entered my card info, there was a charge of 150$ on my card.
A week or so later, my card was charged for 1450.18$. I assumed this was the remainder of the payment for the Macbook.
But then, Apple charged another 150$ to my card?! Can anyone help me with what this charge is supposed to be for. And how do I get this charge reversed.