You will need to contact support who can change the email address and/or cancel your subscription - However good luck with that at the moment because the support system appears to be broken and not-fit-for purpose.
Here’s how it should work, but people are reporting that the ‘Chat’ isn’t starting and after they click the button they just sit there waiting:
All customers MUST now access a ‘Live Chat’ support service.
To start raise a support ticket by using this: Contact Form.
Once you submit the form you will be given a support ticket/ID number onscreen, with a summary of your request. Below that is the button to go straight into the ‘Live Chat’ where a virtual assistant will try to help you.
If the AI can’t help then you will be passed to a real person.
Note - We have been told that you HAVE TO engage with the chat or you may not get a reply to your request form.
(Seems strange to me to have a ‘Start’ button for something that you HAVE to do anyway, but that is what we have been told).