Hi 3931562, sorry to hear this happened. If you are getting email auto-responses from Oracle/Dyn at this point then that is good. It means that the support team will be able to be in touch with you shortly to assist in resolving/recovering the domain in question. Unfortunately you will have to wait for a response. You can also email firstname.lastname@example.org as a secondary channel for support purposes.
Never received any response from tech support, but did finally get a new verification email this morning, so I'm assuming they fixed the problem. I was able to use the link in the verification email to verify my address and restore my domain registration.