Q: if i give you a bank reference number, can you give me a breakdown on what the charges are for

Please do not do that...we are fellow users and not Apple employees.  Contact the store support staff who have access to accounts at http://www.apple.com/emea/support/itunes/contact.html all of the stores use the same support staff.

You can view the purchase on your account via your computer's iTunes : log into your account on your computer's iTunes via the Store > View Account menu option, you should then see a Purchase History section with a 'see all' link to the right of it. Click on that and you should then see a list of your purchases, with the most recent purchase above the list.

Viewing purchase history : http://support.apple.com/kb/HT2727