My neighbours demand I let them use my pool they won't take no for an answer'?

I live on private property and only ever let ftends and family use it my neighbours will not take no for an answer and keep coming back everyday asking what should I do
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My Girlfriend and me moved to the new house 🏘️ a few months ago and we just like to keep to ourselves
My neighbours demand I let them use my pool they won't take no for an answer'?
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