Usually very happy with Aircoach, but had a nasty experience today 13 Oct 2021 on the 11 pm Cork Dublin service. I bought a regular adult return ticket on the website and showed the Cork-Dublin ticket printout to the driver. Upon examining the ticket, they claimed that this is a student fare ticket and I have made a mistake and that they can disallow travel. I clarified that I did not realize it was a student fare as the booking website did not mention anything about reduced fares and proposed to pay the difference. They ignored my proposal and made condescending comments without bothering to check the facts as I found out later on the booking website that I had actually purchased a regular adult ticket, not a student reduced fare ticket. The drivers behavior was utterly unprofessional and disgusting. While they finally allowed me to board and I was able to start my journey, this incident came as a rude shock. Could Aircoach please educate staff about fares, fare rules as well as about behavior towards customers ?