This is a situation a lot of people find themselves in. The simple fact of the situation is that you are more than likely guilty and because of this, are legally required to pay for the mistake you made. Ignorance will not be enough to get you out of this. The only thing you can really do to reach a positive outcome at this stage of the game is to try and negotiate with them. You will be in contact with a human. This person will be open to negotiation. Try and see what you can work out. Ignoring the problem will not make it go away.