How do I cancel my bugzilla account and remove my details?

You sign up by providing you email address which is fine for the system admins to know. Didn't realize that my private email address would now be plastered on the fricking site and used as a username. There was no obvious warning - I was expecting to be able to select a propoer username.

I'm all for community but this is just plain ******ed and I want that account deleted ASAP. How do I do it - it's not obvious?