I had a customer ring me saying that I had missed 2 windows and she was going to knock a fiver off the bill. For the life of me the more I thought about it I had done them. So I rang her and told her I'm sure I did them, she was amendment. I called in to see her and re clean, she followed me to the windows, and said see. I said I could see exactly the problem, opened the window and cleaned the inside. And said I think you owe me the fiver and a bit of diesel laughing, in all fairness she gave me a tenner.
Roy