So how did I get her number and all her details if she didn't say yes? It's funny how she changed her story when she spoke to you and she was fuming when she rang me that you let the dog out. As for one offs, I just don't book them, the odd one may get by but just not in the numbers you suggest.
I never said we would settle up at the end, maybe once a week or so but not at the end. It is too hard to track on a daily basis and I would have had to speak to the customers to check why they didn't want to carry on...