Orders don't get marked as auto sent as far as I'm aware, they will get auto cancelled if it's hasn't been posted after 3days of being paid. The vendor must have marked it as sent
Other than contacting them, you will have to wait for the dispute window to open and raise a dispute, I think the dispute button appears on your order page after 9days
Other than contacting them, you will have to wait for the dispute window to open and raise a dispute, I think the dispute button appears on your order page after 9days