I am a self employed cleaner, a few months ago I inherited a customer from a house share, this customer then moved in with his girlfriend. They both decided they wanted a cleaner, he pays me one week and she pays the other. He is a highly valued customer to me as he pays on time and has always appreciated my work, but I have a real problem his girlfriend, she has never paid me on time, and I am constantly having to chase her for it, she quibbles about petty things, adds her own long list and tries to knock my time off, once she wanted to dock my time because she was ten mins late, I made it clear at the beginning when booking with her boyfriend that I have a minimum call out charge, which is 3 hours or £40, that I have other bookings to get to so can't afford to run late etc. If she was a customer on her own I would have dumped her, but her boyfriend has been a good long term customer, also I am not sure aware if he knows she keeps owing me.