How do I delete my account?

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Lately, my comments have been constantly deleted/censored, especially if I have some critical comments on a stock.  Sometimes, it appears I've been blocked on comments and no matter what I post it gets deleted, while other's comments in opposition appear to have no censorship at all, especially organized and known pumpers.  I find this frustrating as it's a free country last time I checked.  I'm considering deleting my account, how do I do this?