You should definitely write to him and tell him that you are extremly disappointed with the service he offered you and that you had some other business lined up that you were hoping for him to look after but you will have to reconsider. If he thinks there is more work coming his way he might buck up a bit. I would query the bill, you can't obviously dictate what you're willing to pay but let him know that you would hope that he would allow you a discount in light of all that happened. As for the documents that he says you signed previously, the guy I know would say the exact same thing, would leave things on the long finger or misplace something and then he would sign things himself in the clients name and send them off to speed things up. Are you sure he's not east of Limerick, heading for Dublin????