Thank you for your replies, they have been very helpful and I have a better grasp of how to deal with this. I will be sure to let you know how I get on.

I am writing is in the hope that someone who has had a similar experience may be able to help us. We run a small family owned retail store in the UK. In February we received a call from a man who wanted to buy a high quantity of produce from us. Taking orders over the phone was a normal occurrence for us as our handheld streamline device allows us to do so if the customer giving the relevant security details ie: number in the address and postcode, D.O.B etc. We had no reason to suspect this was a fraudulent transaction as the card details went through su