I had to cancel a trip to the states for health reasons which was booked with Aer lingus. I notified them on April 5th and requested email confirmation as I need it for travel insurance, they told me it would arrive withing 30 mins, nothing happened so I phoned again on 10th,11th, and 12th each time having to hold for up to 20 mins to speak with the operator, each time they said it would be sent out but it never arrived(my email is working ok) I rechecked to see if they had correct email they did. I then emailed on 13th reply said it would be sorted withing 8 hours, still nothing what should I do next?