I can understand your frustration - few enough people are buying new Alfa Romeos, so regardless of how much the garage or Alfa Romeo themselves are getting, you'd think they would be set up to sell when a customer wants to buy, otherwise, what's the point anymore?
When you say 'your dealership' - are you tied to buying from a particular dealer? If so, why? If not, have you spoken to any other dealers?
I don't think Alfa Romeo in Ireland have 'customer services' so there's no central point of contact you can approach unfortunately.
And, are you wed to the idea of a new car?
Alfa Romeo Mito TURBO - €12,950 - Used Cars on Carzone.ie - New & Used Cars in Ireland
(I'm afraid I'm not to up to speed on the newer petrol engines, so apologies if the engine in the car I've linked to is not the Multiair - I suspect it is not and so is not as efficient to run or tax, still what you lose on annual costs, you save on purchase price, plus, the dealer in question has a good reputation as far as I know)
All the best, hopefully you stick with Alfa!