Rog,
If windows are open, then tough they don't get done. I may deduct some money from the price, I may not! I might just do a 'best effort' given the circumstances and still charge the full price.
As for the condition of the paintwork, I'll do my best with a pole for the 1st floor windows.
If the customer doesn't like it, she can drop me. It's not my problem. I'm not worried.
Stop being so negative!
As for the Caldicot jobs, they're not brilliantly priced, but ladders are required for the majority of them, to get over the garages or to get over walls. That's why I'm dropping them.
As I say, they're a nice lot, so I'd like to leave them with a good window cleaner.