Eddie as scaffy says Book em Danno
Be reasonable will your costs and give a breakdown of how you arrived at the charge,
Abortive visit charge 2 men x 3 hours @ £25/hr x 50% for transport = £225
with a note to avoid paying these charges in future, please inform us prior to our departure of incomplete works.
JUST REMEMBER :idea:though, when you aren't going to show up, have the balls to ring him and let him know, so he can avoid paying abortive visit charges to others, he will moan like feck, but he will appricate it in the long run.