When I tried to buy some money for a game it said please verify with apple surrport. What does this mean?

If you are getting a message that you need to contact iTunes support to complete the transaction then you can contact them via this page (the message could be appearing for a number of reasons) : http://www.apple.com/support/itunes/contact/ - click on Contact iTunes Store Support on the right-hand side of the page, then try selecting Purchases, Billing & Redempion