I made a terrible mistake of booking May 25th Stockholm to Oakland flight back home instead of April 25th. I literally found this out 25 hours after and Norwegian airline is charging me $150 to change the ticket. (This flight costed me $150) so its buying a new ticket.

My options were either stay in Europe for 1 more month (from March 25th) or pay the $150

Until I found out my citi credit card has flight reimbursement. Has anybody tried this ? if so what can you suggest me in my situation ?