How can I ban my own account?

[Runelevi]

I was hacked and am now being extorted for 50 dollars for my account, it was somehow hacked and then resold to some guy who wants me to pay him 50 dollars for it and the valuation is based off my decent stats, 400 stars in bw and mvp+ rank.

how could i ban my own account on hypixel so that they cant use it at all really, id rather neither of us be able to touch my account then those people.

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