can't add payment method
it's keep saying "Your payment method cannot be processed at this time. Please try again later" after purchasing a song in iTunes.
iPhone 6s, iOS 13
contact iTunes Support:
1. Click on this link --> https://support.apple.com/choose-country-region/media-services
2. Select your country
3. Select: Billing & Subscriptions
4. Select: Subscriptions & Purchases
5. Select: Update payment method
6. Select a chat session or a phone call.