How do you handle coworkers who disrespectfully call you by surname?

There this "personality"
He likes to swagger and call people by surname
Then he talks about people when they're not there referring to them by surname
Not saying anything bad

But then later I meet those guys and they call me by surname

I stop them and ask them why they calling me that
They say maybe: oh that's that xyz calls you

Anyway, I had to stamp it out
How do you handle coworkers who disrespectfully call you by surname?
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