We are experiencing this exact issue at Revuud.
Our former billing administrator left the company several years ago, and their email account is no longer accessible.
I have access to our Jira subscription and Atlassian administration, but I cannot update our payment information or assign myself billing administrator permissions.
I have repeatedly attempted to contact Atlassian Support, but the process sends me in an endless loop without allowing me to reach someone who can resolve the issue.
I see that an Atlassian employee was able to create a support case for another customer experiencing this problem.
Could an Atlassian employee please create a support case on our behalf and escalate this to the Customer Advocates or Billing team?
We can provide verification of our company's ownership and administrative authority privately.