how do i return money sent to my apple ID accoont?

Perhaps this article will help:

Redeem App Store & iTunes Gift Cards and content codes - Apple Support

or

If you can't redeem your App Store & iTunes Gift Card, Apple Music Gift Card, or content code - Apple Support

Note that before you can add funds to your Apple ID, you must have a valid payment method on file. Learn about the payment methods that you can use with your Apple ID. ... See how to Add funds to your Apple ID https://support.apple.com/en-us/HT208687  Note that "after you authorize the payment, the funds ... [are credited] to your Apple ID. Then, you can use the credit to make purchases from the App Store or iTunes store. Need more help? Contact Apple support for help here: Get started."

You want to add the card back as a payment method? If you are a member of Family Sharing, you can't do that.

Log into your account in the App Store/iTunes and you should be able to change/verify it there. Or you can click the blue Edit payment methods in the article below. When signed in and the page loads, you will be on the credit card page. After updating that, click the Go Back button at the lower left and you will be on the address page.

Apple ID payment information - change.  

In regard to returning the money to your credit card, I suggest you contact Apple Support:

You can get Apple telephone support  for help in solving your problem using this link https://getsupport.apple.com/?caller=kbase&PGF=PGF63005&category_id=SC0245&symptom_id=23362  Be patient sometimes Apple support is closed to immediate phone support.

And here is how to contact iTunes worldwide support via text or chat using this link https://support.apple.com/choose-country-region/itunes After choosing your country, see the heading Tell us how we can help.

You also can use Apple Support Twitter https://twitter.com/AppleSupport

See the About unused Apple ID balance in the article below.

Apple ID balance - View 

How i return to my bank card