Does anyone know how to entirely delete ones account?

Picture removal is relatively easy but how does one delete all account info. ?!

I’ve recenty discovered someone hacked my account and added a separate email address linked to my account-

I suggest everyone revisit their profile and preferences and make sure all your information is accurate and not altered.

Any info on deleting account would be great.
Too bad as I’ve been here and enjoyed the site for almost 7 years.
Thanks