My credit card was declined after I bought an iTunes card, need to know why? It was fine up until then.

Review the suggestions in this link about what to do "If your payment method is declined in the App Store or iTunes Store" Click here --> https://support.apple.com/HT203005

If you still have problems Click here --> https://support.apple.com/choose-country-region/media-services Select your country, then a product. If you don't see one that handles your issue then keep experimenting with selections until you reach one that gets you a chat session or a telephone call and get the representative to redirect you.

or:

Contact Apple for support and service --> "See a list of Apple phone numbers around the world." - https://support.apple.com/HT201232

I can’t get an iTunes card using my AppStore and there’s money on my debit card .