My account has been blocked, and the recovery code is being sent to an email address I cannot access

I am sending this message using my friend's account (who is with me, so we have instant access to any response), as I obviously cannot sign in using my own.

My account: (Removed email address for security reasons) has been blocked. I think this may be due to me sending a large number of emails to my students this morning.

Unfortunately, I am unable to access the email address listed as the one that the recovery code will be sent to, as I have not used it in over two years. So, I have no way of unblocking my account.

Please can you assist me with this urgently?