Signed up with email with typo that ends in .comt now can't change it!

I created my account with an email typo of mymail@mailbox.comt instead of @mailbox.com. Now I can’t change it because it wants to send a verification email to the address that does not exist. Do not know why I could setup an account with a typo in the address to start with. Anyway I get stuck in a loop when trying to contact customer service. Any suggestions?

Go here:

Then click Change email. You can enter your new email and then a code will be sent to your new email address (the one you are changing it to)