Amazon Order Missing After Account Switch

I recently placed an order of approximately $1,300 on Amazon’s US site last Thursday. The money has been taken from my bank account, but when I log in to Amazon it shows that I have no orders and I cannot see or track this purchase at all. The problem started after I changed the username on my phone from my own Amazon account to my husband’s account. Since then, my own order has disappeared from the order history, even though the payment has already been taken. I also currently cannot confirm this with my bank because my bank account is closed. I am very worried because this is a high‑value purchase and I have no information about where my order is, whether it exists in your system, or if it will be delivered. I request that you urgently locate this $1,300 order, restore it to the correct Amazon account so that I can track it, and make sure that I either receive the order or, if it cannot be found or fulfilled, that my $1,300 is fully refunded as soon as possible. I kindly ask you to review my accounts and transactions, contact me with clear information about this order, and resolve this issue without any further delay.