follow it up, or leave it as is?
alot of talk about principals. surely the principal is you had, at the very least, a verbal contract with this woman. she has broken this contract by refusing to pay for your services.
some guys have said this sort of thing is few and far between, surely though, the more times we let it go, the more people find out that the window cleaner is a soft touch and it snow balls. suddenly everyone she knows is trying it on with you.
the other possibility is that she is telling people what a bad job you did. each way you loose future income.
all each of us have is our reputation. is that worth fighting over?
only you can answer that.
Niall