It is very hard to read your posts because you don't use any punctuation.
I suggest that you need to have someone look at your deeds and walk you through the different situations you've outlined.
So: the house was originally owned by both your parents.
You mother died.
Your father gave you an interest ( all? or some?) in the property. There must have been a solicitor involved. And a Deed. Or a Transfer.
You say you raised a mortgage. Are you sure? Is there a chance that you have an unsecured loan only?
It is most unlikely that any bank secured a mortgage on the property, without your father's consent, unless he had transferred the entire legal title to you.
The senior counsel who gave you the advice may have had difficulty understanding your position. Unless he had access to all the information.
I don't think the Bank will give you back your deeds. Is there any prospect of you ever being able to repay the debt? Can you sell and clear the debt?
How much is the debt? How much is the house worth?
mf