I've downloaded the same ringtone twice and been charged twice on the same receipt how can I get a refund?

Purchases are considered final but you could try the 'report a problem' page to contact iTunes Support and see if they will refund or credit you : http://reportaproblem.apple.com

Or you can try contacting iTunes Support via : https://support.apple.com/contact or https://www.apple.com/emea/support/itunes/contact.html

You can try contacting iTunes support via this page : http://www.apple.com/support/itunes/contact/ - click on Contact iTunes Store Support on the right-hand side of the page

Note that ringtones are currently a one-time only download from the store, so you should copy it to your computer's iTunes via File > Transfer Purchases (File > Devices > Transfer Purchases if you iTunes 11 on your computer) so that you can take a backup copy of it.

I was downloading ringtones and I accidentally downloaded the same twice a so I was wonder if I could get refund for one of them please thank you