It sounds like you have a use-based or subscription service on the account. Can you create a ticket using the account you are using here, mention the email you can no longer access and the name of a website in the account.
Can you respond to the copy of the ticket you received via email, cc the address of the other account and mention that email and a domain associated with that account to ensure the team can locate the proper account?
You should have received a copy of ticket 3106903 to the account you are using here. Respond via email to that ticket and add the temp email and name of the domain (website) to your reply so that the team can identify the account where you are being charged,