Q: How can I buy pile of gems in clash of clans

What happens when you try to buy them ? If you are getting a message to contact iTunes support then you can do so via this page and ask them why the message is appearing (these are user-to-user forums, we won't know why) : http://www.apple.com/support/itunes/contact/ - click on Contact iTunes Store Support on the right-hand side of the page

If it's a different problem ... ?

What don't you understand, and what happens when you try to buy the gems ?

Hi,

Have they resolved this issue because i sent this via email but they are not responding at all which frustrates me really..

I have no idea whether they have, I'm just a fellow user. Has it been 24 hours since you contacted them ?

Ineed gems clash of clans