Just cleaned out my account but it still says I am out of storage

I have gotten a message that I am out of storage. I just cleaned out all of our old forms and submissions and I am still getting the same message. Is there a step I missed?

I checked your account. It is because you have not purged a form from the Trash, which has 443 submissions.

Please try to purge this form and then test again.

If you delete the form and you still get the warning, please contact us again and we will further investigate.