You can change the password to something random and forget it, after removing any card details etc. Tell "sales at atlassian dot com" that you wish the account to be closed and deactivated as well, then there should be no errors.
But deletion is not possible - Atlassian are required to keep an audit trail for some time, so they won't delete your account until it's been inactive for a while (regulations vary by country, and I don't know what their retention rules are)
Thanks for signing up for Jira Ops! I’m Matt Ryall, leader for the Jira Ops product team at Atlassian. Since this is a brand new product, we’ll be delivering improvements quickly and sharing updates...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs