I've been offered the mobile offer every time I call.
I was told €5 per month for 6 months, then 25 after that.
The 25 still seemed step enough to me, I've unlimited everything (but v limited signal for calls) with Gomo for tenner a month.
I eventually got through. It seems like they cleared their queue as I had been holding and the line hung up, when I rang back I got through straight away.
Anyway the representative offered me €15 for 6 months and €25 thereafter. When I pushed for the €5 for six months she straight up told me I was 'mistaken' in thinking existing customers were availing of the offer.
I've put in a complaint anyway regarding the ridiculous issues on the phone lines today. Over three hours of waiting and dropped calls on a number of occasions.