Apple money

You're probably referring to Apple Cash (transfer funds to family and friends) and not Apple Pay (Tap-To-Pay). Apple Cash is serviced and issued by Green Dot Bank. Please contact an Apple Cash Specialist at Green Dot Bank. 

Contact Green Dot Bank

•  call (877) 233-8552

•  disputes at P.O. Box 9, West Chester, Ohio

•  general customer service at P.O. Box 1070, West Chester, Ohio 45071

• visit www.greendot.com

https://applecash.greendot.com/termsconditions/

You're probably referring to Apple Cash (transfer funds to family and friends) and not Apple Pay (Tap-To-Pay). Apple Cash is serviced and issued by Green Dot Bank. Please contact an Apple Cash Specialist at Green Dot Bank. 

Contact Green Dot Bank

•  call (877) 233-8552

•  disputes at P.O. Box 9, West Chester, Ohio

•  general customer service at P.O. Box 1070, West Chester, Ohio 45071

• visit www.greendot.com

https://applecash.greendot.com/termsconditions/

If this is about your Apple Account balance, did you make sure, that there is no more balance left?

Check your Apple Account balance - Apple Support

You can also check your purchase history, to find out, for which purchases the Apple account balance has been spent in the past:

...

1. In the App Store, tap your photo or initials. Or, tap the My Account button and sign in to your Apple Account.
2. Tap Apps & Purchase History. You might be asked to sign in to your Apple Account.
3. Tap Purchase History.
4. If you're not sure what you were charged for but know the amount, search for the amount.
5. To view more purchases, tap "Last 90 days" at the top of Purchase History and choose another way to filter your purchases.

...

copied from: View your purchase history for the App Store and other Apple media services - Apple Support