1) Do you have a written letter of confirmation that you can move your tracker?
Does that specify the terms and conditions?
2) Have you signed contracts for the sale of your house?
3) Have you signed contracts for the purchase of your new house?
I think you have to take a deep breath and assume that your complaint with AIB will be resolved by them.
Don't write an intemperate letter.
Set out all the facts and dates in a clear and concise manner.
Ask for the letter of offer to be extended so that you can complete the purchase.
Check out the AIB advertising and website material to see what they say about tracker mover conditions.
I would not have that much faith in the Ombudsman resolving this. Check with your solicitor, if court action would be more effective.
In the meantime I'm seriously considering taking the proceeds of our house sale and investing in aib shares!
That is such a bizarre comment that it worries me that your whole story is probably irrational.
Brendan