How do I transfer Apple ID money back to my debit card

You can't do that yourself. Contact iTunes Support for assistance. See the Apple Support articles below for contact information.   

iTunes Support – world wide 

Apple Support schedule phone call     

Billings and Subscriptions 

If necessary, try Twitter

https://twitter.com/AppleSupport.         

WHATS THE BALANCE ON MY APPLE ACCOUNT?

See if anything here helps.

Apple ID balance - View   

WHATS MY APPLE CARD BALANCE?

WHATS MY APPLE CARD BALANCE?