Understand the frustration, but no need for such language. Please edit the post or it’ll likely be flagged.
If you are being asked for your phone number, this is part of the (new) sign-up flow, not the login flow.
So you are attempting to login to your existing account with a new email.
You need to login to your account with the same email address that you used when you originally signed up with Monzo.
See here for further details;
If you haven’t previously signed up and had access to the app and/or a Monzo account - the image you posted screams ‘Issue’