The Atlassian Community can help you and your team get more value out of Atlassian products and practices.
Hey, My development team just hacked into my account changed ownership. They proceeded to take down all my client accounts. I need some help now please. How do I get help immediately?
You will need to contact support if you need to recover your accounts.
Visit https://support.atlassian.com/contact and raise a call there.
I am sorry that there is not a lot the community can help you with on this one.