For those not on Twitter:
Due to ongoing works on the Cork line the 20.20 was replaced with a 20.40 which included a bus transfer. According to their website, and it's still there.
Then a 20.50 appeared in the printed timetable, without bus transfer but quite slow nonetheless, at 3 hours.
I queried this and they pointed me to the website, and when I asked about the 20.40 service as detailed on the website there was a "what u talkin about Willis" type answer, despite the fact that it's STILL THERE, on the very feckin page they linked to.
I cancelled my ticket on the basis of what the website said about the 20.40, and had no problem getting a full refund.