Apologies for the experience you've had with trying to sign up yesterday.
It looks like you've tried again this morning and an account has been created now.
If you've seen two amounts of money taken from your bank, I'd expect one of the amounts to return into your account as soon as your bank realise we haven't taken two. For a timeframe, it's worth getting in touch with your bank.
Sorry for any inconvenience caused.
If this post resolved your issue please click the 'This fixed my problem' button