Hi anna
This is how UB normally does it.
Let's say your mortgage is €100,000 before anything happens.
They work out that you were overcharged €30,000 interest.
They reduce the balance to €70,000.
But the overcharge of €30,000 was accounted for by overpayments by you of €20,000 and a balance €10,000 higher than it should have been.
So they then send you a cheque for €20,000 and increase the mortgage balance by €20,000.
So the net effect should be as follows
Balance reduced to €90,000
and you have a cheque for €20,000.
Does this help in any way?
If not, maybe give the exact figures and we will try to interpret what happened.
Brendan