I am used to travelling with Aircoach and usually find their transport service to be excellent. However, I was incredibly disappointed with the service I was recently provided with at Dublin Airport Terminal 1. Despite having a perfectly valid ticket with young adult/student leap card, I was asked to rescan my ticket four times to gain admission to the bus. I was then informed that my ticket was no longer valid, it having already been scanned, and was told that if I wished to travel, I would need to purchase a new ticket on the spot. Upon logging into my Aircoach account, I observed that my ticket had been successfully scanned and was surprised that I needed to purchase a new ticket. Nonetheless, I showed my student/young adult leap card to purchase the new ticket and was informed that Aircoach could not accept it a second time, the adult ticket that I had to purchase cost over three times a student/young adult ticket. I was taken aback by the rudeness of the staff at Aircoach Terminal 1 and would be very hesitant to travel with Aircoach again.