Your Purchase Could Not Be Completed. For assistance, contact iTunes Support at www.apple.com/support/itunes/ww/.

Click here --> https://www.apple.com/support/itunes/ww/

What did Apple say when you contacted them using the link in the message (repeated here):

Click here --> https://www.apple.com/support/itunes/ww/

"For assistance, contact iTunes Support at www.apple.com/support/itunes/ww/."

Follow the link, then find your country on the page. Follow the instructions from there.

Your default billing method is most likely invalid/non-existent. As the message indicates, contact iTunes Support. Note you can add or edit billing info via the iTunes store > View Account.

Contact itunes or update your billing/payment information. More than likely you need a new payment method

www.apple.com/support/itunes/ww/.

Hi I have a problem how in-app purchase can help me.

Why

arioyas wrote:

Hi I have a problem how in-app purchase can help me.

That depends on what problem you have. Can you describe what your problem is?

??

What part of

"For assistance, contact iTunes Support at www.apple.com/support/itunes/ww/."

don't you understand?

Hi my name is Samantha I need some help

I can't but apps