I booked two return Tickets from Dalkey to T1 for 12.00 on Wed 17 July retunring on booked seats for 17.50 on Saturday 20th July. The 12.00 bus simply did not turn up. Four people were stranded at the stop and by 12.20 three of us ordered a taxi. I rang aircoach and got several minutes of 'press this for that ..' runaround before being put on hold for 5 mins. The guy I talked to with an English accent could only tell me about a bus leaving Bray, he seemed not to know anything about Dalkey or where any buses might be. I had to cut our pointless chat short to get our taxi. For our return journey later today the bus has been cancelled. We are simply invited to get another one, and are really looking forward to two hours at Dublin airport hoping to get on the 18.50. Work on the Dart means we cannot go our usual route of Dublin Express plus Dart from Tara so are stuck with aircoach. For a speciality airport service they should be totally embarrassed by this clown show quite frankly.