I tried the 00353 12480858 number this morning and got through in 3 minutes.  They were very helpful and solved my problem. 

Thanks for the information.

They do however continue to "abuse" those in need of assistance with this little gem, and 0871 number for Special Assistance.

Additionally if you need help with making Online bookings you can ring them on an 090 number at over £1.50 per minute...

I just called the +353 1248 0858 (Ireland) number. Despite it being a special assistance/mobility line, they were still able to handle my request. I was hold for ~10 minutes, however once I got through, the representative on the line was very helpful and quickly revised my booking, as well as resent an email confirmation.

**A tip for those calling from other countries (I called from the US). I used Skype to place the phone call -- they currently have a 1-month free trial offer for unlimited worldwide calls. I was able to make this call to Ireland for free and now all have to do is cancel the subscription.

Before that, I called the +44 871 246 0000 (UK) number, but I was not able to get through due to a "high call volume". As stated in previous posts, I was unfortunately charged for this phone call from the Skype Credit I had in my account.

Ryanair customer service uses an 03 number. Why do you think you need an alternative?