How do you know that it is trying to charge your credit card? Has it been refused? Do you need to update any information about your card?
Is it possible that you have a prior billing problem? If so, see this. If your payment method is declined, or you have a billing issue with a previous purchase in the iTunes Store - Apple Sup…
If that does not help, you can contact iTunes support. https://www.apple.com/emea/support/itunes/contact.html
It seems if you are having an issue with updates, then there is an issue with your account.
I currently have 15.40$ Canadian, and my purchase is 1.39$ and there was another one I tried to do for 6.99, but it's trying to charge my credit card information, still. And now I cannot even update any of my apps already downloaded that were free. (Snapchat and Facebook)
Just for clarification, how much credit do you have on the account, and what is the cost of the purchase? Have you ever made a purchase from the App Store in the past?
I'll check both of those out, thank you!
You're welcome.
App Store problems
