Now in truth, I don't get one very often. In fact I don't remember the last time, so when it happens it does hit a bit hard. I got home yesterday (after spending most of the day in hospital undergoing a number of tests including an MRI), to find a letter from a customer. Just a letter mind, no cheque. It appears that I cleaned her windows just hours after she left for a five day break. She has returned to find my bill and her windows are filthy. She will discuss when I next go round. I rang her and in the conversation she admitted that only the front of the building is filthy, the other three sides are perfectly fine. I suggested that there may have been a storm that has driven the grime into the front of her home. She agreed that this is the side that is most weathered and said the windows are covered in a grey film. I explained that I am currently cleaning salt from many properties since the recent stormy weather. She agreed that the grime is 'saltlike' Although she agrees, she will not accept that she still has to pay. Arguing that her windows are not clean. They were when I drove away. Sometimes I think some customers you can do without. Rant over.