Can I get a refund?

We are fellow users, and as you don't give any information as to why you are asking, we obviously won't know. Purchases are considered final but you could try the 'report a problem' page to contact iTunes Support and see if they will refund you as a one-off : 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