i had a customer who wanted me to clean his takeaway . he said every 2 weeks i agreed a price with him . i cleaned away for 6 weeks ....the problem was getting paid as he was only open night times so went down to pick up the money , he then back tracks and tries to beat the price down, i told him to pay up and he did to be fair .. he then said stop cleaning them i said ok ... 3 months later(last week) he approached me and asked for me to clean his windows ... i said ''where ''pretending not to remember... he told me where and i said NOOOOO CHANCE . i took great satisfaction in that... lol