Why dont they just tell you they dont want them doing!
Ive got a place where i do about 4 in one stop but one house they are so moody when i go, i should just leave them but its one of those places where theyre close so i do it anyway, they seem to hand the money over so be grudgingly!
They hid from me today at the pub which is by their house, i went over said hello done your windows to the women, "go in there hes got the money" oh ok, i walk in to an empty pub with someone sat at bar. "looking for ***** are ya" yeh, "oh he was here now hes gone" me standing there like a pleb, id just wathced him walk in, he was hiding behind bar!

he wondered out and paid but looked well miffed.
I really wouldnt care less if he cancelled...just get on and do it tho! I might ask next time, most of my customers, no pretty much all of them are well sound just the odd few...and they asked me to do them cause THEY were desperate.