Two men from the local curtain & blinds shop are in my house. They are fitting child safety attachments to the Roman blinds (we have a lot of them), so that the cords run taut through a pulley, rather than hanging loose for small children to get tangled in.
So far, so good. They come to say they're done. I go to have a quick look round at the blinds. I close the blind in the bedroom - only it won't close, because the plastic connector on the blinds cord won't go through the pulley.
Me: 'the blind doesn't shut'
Him: 'that's because the connector it too big'
Me: 'but we need the bedroom blind to shut'
Him: 'well I haven't got a smaller connector in the van'
Long pause
Him: 'I suppose I could go and get one from back at the shop' (with a heavy sigh, like I am the most unreasonable customer on earth)
well, maybe I am. but I won't be handing the cheque over till the blinds are both child-safe and operable.