Bumper,
I think you are well out of order. Your attitude stinks.
Granted, if the work was not done for 6 months he may have lost SOME but you say you carried on cleaning the round, meaning that there was more than 10% of the round left. For it to be worthwhile for you to continue it instead of walking away I reckon there were likely a lot of customers left.
The fact that he hasn't checked it tells me that he trusts you and I think you have just taken advantage of that.
Why haven't you gone out and canvassed your own work? - Because YOU can't be bothered.
Easier to just take underhandedly steal the round off someone else though ey.
it beats paying for it
The fact that you brag about it astounds me.
People like you really wind me up.
PS reading through your other posts, I can see I'm right. It's people like you that give window cleaners a bad name.