The short answer is no.
There was no requirement on banks to allow people avail of the lower LTV and when house prices dropped they did not revise the rate upwards.
I campaigned on this issue and Ulster Bank was the first to commit to allow all customers avail of the updated LTV.
AIB was the last and only did so because the Chief Executive got it wrong in front of the Oireachtas Finance Committee.
Having said all that, there is nothing to stop you making a complaint to AIB. It will be rejected.
Then you can go to the Ombudsman. It won't cost you anything but time and frustration. I doubt you would win, but if you did win it would have huge implications for other borrowers as the Central Bank would tell them to roll it out.
In fact, if you did win with the Ombudsman, AIB would have to appeal it to the High Court.
Brendan