Dear Holly, I'm a manager, but my staff don't respect me at all, and are constantly making me the butt of their jokes. At first I just ignored them, but over the last few weeks it has got worse. I constantly find post-it-notes saying things like 'twatmuppet' and 'knob-gobbler' stuck to my back, and the other day, I came in to find my Winne the Pooh desk mascot hanging from the ceiling in some kind of mock-execution. I know I'm a grown man, but I can't help feel like I am being bullied. How can I regain my authority? Darren, Swansea

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