I booked the Aircoach while waiting at Gatwick Airport expecting to arrive in Belfast at about 5.50pm so I decided to book a ticket on the 6.10pm coach from Belfast Airport to Derry. I had heard a rumour that the flight might be delayed so I decided to fork out an extra £3 for the "flexi" option. When my flight was delayed I tried to alter my ticket to the 8.10pm service but I was charged an extra £2. What the heck was the "flexi" all about? Then I tried to hand over my QR code on the bus but the driver, in quite an unfriendly manner, insisted on seeing the time on my ticket. The QR code was never used. When I left the bus in Derry I said "thank you" to the driver and he just grunted and looked the other way. What happened to the friendly staff I had heard so much about?