How do I politely get people to leave me alone?

I've heard them slag me off to others and now they are being overly polite and friendly like we are best buddies and injecting themselves into conversations. I dont want to be rude but as its a working environment and some higher levels but they are a level 10 lingerer.

How do i politely say back right up and f*ck off.

How do I politely get people to leave me alone?
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