I used my credit card to secure bookings on Booking.com. Two of these hotels automatically charged my card when I checked-in (they did this according to the emails sent to me, but these charges have not yet shown on my statement). But I looked at my statement and there is a charge for "Hotel on Booking.com Amsterdam NDL". The charge is for $50. This is equal to the cost for my hotel stay. Has anyone encountered something like this? I already messaged my parents and asked them to call and freeze international charges or cancel the card. Any advice?