An indemnity is when your bank tells the bank that's received your money that you have been a victim of transfer fraud and asks it to return any money it still has.
This stops money transfers in and out of an account and can be applied for at more than 40 High Court offices around the country.
You just turn up and fill in an N244 form. These are complicated, so you may need legal help.
You'll probably need to provide them with proof of the court order and other details.